Encycolorpedia

#494d4a十六進の色コード

#494d4a Paint Chip十六進の色コード#494d4a緑色の暗さの中間の色合いです。光の三原色RGBにおいて色モデル#494d4aは28.63%の赤色、30.2%の绿色、29.02%の青色でできている。HSLで色彩空間#494d4aは135°度の色調、3%の彩度、29%の明るさを有している。この色は約535.52nmの波長である。

色のバリエーション

名前付き色

配色

ダウンロード:GIMP GPL Adobe ASE (Adobe Swatch Exchange) Sketch Palette

単色

  1. #3c403d
  2. #404441
  3. #454946
  4. #494d4a
  5. #4d514e
  6. #525653
  7. #565a57

色彩勾配

#494d4a黒まで

  1. #494d4a
  2. #646865
  3. #818482
  4. #9fa1a0
  5. #bec0be
  6. #dedfde
  7. #ffffff / #fff

#494d4a白まで

  1. #494d4a
  2. #3d403e
  3. #323432
  4. #272927
  5. #1c1d1c
  6. #111211
  7. #000000 / #000

塗料

類似の塗料

  1. ICI Paints

    1. ★ Blackfeet 30GG 09/025
      #484d4a
      ΔE = 0.408 / LRV ≈ 7.2%
    2. Forest Black 30YY 10/038
      #524d47
      ΔE = 4.263 / LRV ≈ 7.6%
  2. Sherwin-Williams

    1. ★ Rock Bottom - 7062
      #484c49
      ΔE = 0.430 / LRV ≈ 7.0%
    2. Olympic Range - 7750
      #424c44
      ΔE = 3.890 / LRV ≈ 6.7%
  3. Sikkens

    1. ★ MN.02.26
      #494d4b
      ΔE = 0.590 / LRV ≈ 7.2%
    2. SN.02.27
      #4e5152
      ΔE = 3.107 / LRV ≈ 8.1%
  4. Vallejo

    1. ★ Vallejo 70.924 #94
      #474d49
      ΔE = 0.993 / LRV ≈ 7.1%
    2. ★ Vallejo 70.869 #162
      #484b4a
      ΔE = 1.420 / LRV ≈ 6.9%
  5. Borgward

    1. ★ Silbergrau / 76
      #484b49
      ΔE = 1.012 / LRV ≈ 6.9%
  6. Benjamin Moore

    1. ★ Deep River / 1582
      #4c4f4b
      ΔE = 1.162 / LRV ≈ 7.6%
    2. Notre Dame / CSP-570
      #414444
      ΔE = 4.144 / LRV ≈ 5.7%
  7. Cloverdale Paint

    1. ★ Contessas Cape / 8285
      #4c4e4c
      ΔE = 1.165 / LRV ≈ 7.5%
    2. Carbon Copy / 8293
      #4e4b46
      ΔE = 3.206 / LRV ≈ 7.1%
  8. KILZ

    1. ★ Toasted Poppyseed / G891
      #4a4c4b
      ΔE = 1.402 / LRV ≈ 7.1%
    2. Licorice Rope / G901
      #454749
      ΔE = 3.889 / LRV ≈ 6.3%
  9. Devoe Paint

    1. ★ Light's Out / 50BG 08/021
      #4d4f4d
      ΔE = 1.445 / LRV ≈ 7.7%
    2. Black Mica / 30BB 05/022
      #414242
      ΔE = 4.888 / LRV ≈ 5.4%
  10. Toyo Ink

    1. ★ CF11007
      #464b4a
      ΔE = 1.547 / LRV ≈ 6.8%
    2. CF11015
      #474847
      ΔE = 2.451 / LRV ≈ 6.4%
  11. Pantone / PMS

    1. ★ 19-0506 TPG / Black Ink
      #494a47
      ΔE = 1.601 / LRV ≈ 6.8%
    2. 8404 C
      #534e48
      ΔE = 4.350 / LRV ≈ 7.8%
  12. Nerolac

    1. ★ Spruce Grove - 2945
      #49504e
      ΔE = 1.691 / LRV ≈ 7.7%
    2. Polo Game - 4564
      #414b41
      ΔE = 4.960 / LRV ≈ 6.5%
  13. Asian Paints

    1. ★ Mineshaft / 8285
      #484a49
      ΔE = 1.740 / LRV ≈ 6.8%
    2. Tar Road / 8245
      #47484c
      ΔE = 4.792 / LRV ≈ 6.5%
  14. Little Greene

    1. ★ Shift
      #4b4b49
      ΔE = 1.788 / LRV ≈ 7.0%
  15. Dunn-Edwards

    1. ★ Iron River / 165
      #4d504b
      ΔE = 1.796 / LRV ≈ 7.8%
    2. Cover of Night / 151
      #494e4f
      ΔE = 2.496 / LRV ≈ 7.4%
  16. Diamond Vogel

    1. ★ Dark River / 0494
      #474c4c
      ΔE = 1.902 / LRV ≈ 7.0%
    2. Oyster Catch / 0585
      #55554f
      ΔE = 4.378 / LRV ≈ 9.0%
  17. Behr

    1. ★ Putting Green C70-10
      #434a47
      ΔE = 1.959 / LRV ≈ 6.5%
    2. Market Tavern PEC-20
      #43443e
      ΔE = 4.329 / LRV ≈ 5.7%
  18. Taubmans

    1. ★ Casino / T12 8.G12
      #4b4b4a
      ΔE = 2.012 / LRV ≈ 7.0%
    2. Castanet / T12 9.H8
      #494742
      ΔE = 3.518 / LRV ≈ 6.3%
  19. Crown Diamond

    1. ★ 7403-73 Ancient Lava
      #4b4f4f
      ΔE = 2.036 / LRV ≈ 7.7%
    2. 7404-73 Wolf
      #494f53
      ΔE = 4.385 / LRV ≈ 7.6%
  20. Beckers

    1. ★ Aska 518 / 6901-B85G
      #4e504f
      ΔE = 2.064 / LRV ≈ 7.9%
    2. Åska 517 / S 7000-N
      #4c4c4c
      ΔE = 2.320 / LRV ≈ 7.2%
  21. Nippon Paint

    1. ★ Crater Black / NP N 2030 A
      #4f504b
      ΔE = 2.268 / LRV ≈ 7.9%
    2. Black Swan / NP N 2044 A
      #4d4d4d
      ΔE = 2.363 / LRV ≈ 7.4%
  22. Alcro

    1. Pigeon grey
      #4a5050
      ΔE = 2.310 / LRV ≈ 7.8%
    2. Siames
      #4b4a4a
      ΔE = 2.793 / LRV ≈ 6.9%
  23. Bristol

    1. Dark Night / P222-N7
      #424946
      ΔE = 2.320 / LRV ≈ 6.4%
    2. Onyx Ring / P232-N7
      #464542
      ΔE = 3.668 / LRV ≈ 6.0%
  24. Tamiya

    1. Tamiya 85305, MS-5
      #4c4c4c
      ΔE = 2.320 / LRV ≈ 7.2%
    2. Tamiya 80363,XF63
      #3e484a
      ΔE = 4.531 / LRV ≈ 6.2%
  25. Jotun

    1. 9938 / Dempet Sort
      #494948
      ΔE = 2.356 / LRV ≈ 6.6%
    2. 8266 / Yin
      #4e4c4a
      ΔE = 2.577 / LRV ≈ 7.3%
  26. RAL

    1. RAL 7043 / Traffic Grey B
      #4f5250
      ΔE = 2.362 / LRV ≈ 8.3%
    2. RAL 870-M
      #4d4747
      ΔE = 4.889 / LRV ≈ 6.5%
  27. General Paint

    1. Blade / CLV 1159N
      #4a524f
      ΔE = 2.363 / LRV ≈ 8.1%
    2. Ringspun / CLV 1160N
      #515252
      ΔE = 3.257 / LRV ≈ 8.4%
  28. Volkswagen

    1. Anthracite
      #50514d
      ΔE = 2.384 / LRV ≈ 8.1%
    2. Onyx Green
      #4c5149
      ΔE = 3.219 / LRV ≈ 7.9%
  29. Duron

    1. Rock Bottom
      #444847
      ΔE = 2.408 / LRV ≈ 6.3%
    2. Urbane Bronze
      #4d4842
      ΔE = 4.468 / LRV ≈ 6.6%
  30. Ford

    1. Gunpowder Gray
      #4a4a4a
      ΔE = 2.468 / LRV ≈ 6.8%
    2. Graphite
      #474641
      ΔE = 3.591 / LRV ≈ 6.1%
  31. Chrysler

    1. Dodge Gunmetal
      #4a4a4a
      ΔE = 2.468 / LRV ≈ 6.8%
    2. Steel Gray
      #514e48
      ΔE = 3.569 / LRV ≈ 7.7%
  32. Coronado Paint

    1. 8309 - Midnight In The Tropics
      #444744
      ΔE = 2.535 / LRV ≈ 6.2%
    2. 8325 - Dark Moon
      #4e4d46
      ΔE = 3.156 / LRV ≈ 7.4%
  33. CIL

    1. Light's Out
      #4b4f50
      ΔE = 2.610 / LRV ≈ 7.7%
    2. Northwest Green
      #495349
      ΔE = 4.944 / LRV ≈ 8.1%
  34. Rodda Paint

    1. Brattle Spruce H98
      #454743
      ΔE = 2.654 / LRV ≈ 6.2%
    2. Sturgis Gray H119
      #57554f
      ΔE = 4.903 / LRV ≈ 9.1%
  35. Ralph Lauren

    1. Gallery Green / RLTH235
      #434b45
      ΔE = 2.685 / LRV ≈ 6.7%
    2. Sheen River / RLNA234
      #545853
      ΔE = 4.738 / LRV ≈ 9.5%
  36. Berger

    1. Dark Moon / 8325
      #4a4b44
      ΔE = 2.750 / LRV ≈ 6.9%
    2. New Uniform / 8261
      #49484c
      ΔE = 5.021 / LRV ≈ 6.6%
  37. Scib Paints

    1. Dark Moon / 8325
      #4a4b44
      ΔE = 2.750 / LRV ≈ 6.9%
    2. Oper Evening / 8365
      #495146
      ΔE = 4.928 / LRV ≈ 7.7%
  38. Vista Paint

    1. Dark Moon
      #4a4b44
      ΔE = 2.750 / LRV ≈ 6.9%
    2. Midnight in the Tropics
      #3f4341
      ΔE = 4.349 / LRV ≈ 5.5%
  39. Clark+Kensington

    1. Black Chiffon / N-C15
      #4d4f50
      ΔE = 2.784 / LRV ≈ 7.7%
    2. Blossom Silhouettes / 30A-5
      #4c5754
      ΔE = 4.511 / LRV ≈ 9.0%
  40. Glidden

    1. Licorice / PPG1009-7
      #4e4f48
      ΔE = 2.814 / LRV ≈ 7.7%
    2. Witchcraft / PPG1037-7
      #474c50
      ΔE = 4.281 / LRV ≈ 7.1%
  41. PPG Pittsburgh Paints

    1. Licorice / PPG1009-7
      #4e4f48
      ΔE = 2.814 / LRV ≈ 7.7%
    2. Onyx / PPG1011-7
      #464544
      ΔE = 3.770 / LRV ≈ 6.0%
  42. Olympic

    1. Bewitched D64-6
      #454842
      ΔE = 2.829 / LRV ≈ 6.3%
    2. Black Forest D57-6
      #444c4f
      ΔE = 3.961 / LRV ≈ 7.0%
  43. Earthpaint

    1. 5-20-7 Granite Stone
      #4c4c45
      ΔE = 2.883 / LRV ≈ 7.1%
    2. 5-26-7 Briny Deep
      #48544e
      ΔE = 4.132 / LRV ≈ 8.3%
  44. Natural Color System / NCS

    1. S 7005-B80G
      #414744
      ΔE = 2.887 / LRV ≈ 6.0%
    2. S 6502-B
      #525252
      ΔE = 3.469 / LRV ≈ 8.4%
  45. Caparol

    1. 45 3 102 / Mai 5
      #505050
      ΔE = 2.893 / LRV ≈ 8.0%
    2. Schiefer12
      #54544c
      ΔE = 4.584 / LRV ≈ 8.7%
  46. Brighto Paints

    1. 5-29-7 Phantom
      #404946
      ΔE = 2.919 / LRV ≈ 6.3%
    2. 5-20-7 Granite Stone
      #4e534a
      ΔE = 4.105 / LRV ≈ 8.3%
  47. Dulux Australia

    1. Pompeii Ash / I24
      #505151
      ΔE = 2.945 / LRV ≈ 8.2%
    2. Western Myall / GR23
      #545657
      ΔE = 4.834 / LRV ≈ 9.2%
  48. Teknos

    1. PR550
      #4e4c4c
      ΔE = 3.070 / LRV ≈ 7.3%
    2. GBI141
      #4f4a47
      ΔE = 3.854 / LRV ≈ 7.0%
  49. Flügger

    1. Koksgrå (IN-596)
      #4e5152
      ΔE = 3.107 / LRV ≈ 8.1%
    2. Oxyderet Grå (H 08)
      #4b4641
      ΔE = 4.625 / LRV ≈ 6.3%
  50. Valspar Paint

    1. Dark Kettle Black
      #474747
      ΔE = 3.156 / LRV ≈ 6.3%
    2. New Black
      #4a484b
      ΔE = 4.691 / LRV ≈ 6.6%
  51. Audi

    1. Nimbusgrau Pearl / 8X, LZ7X
      #4e5353
      ΔE = 3.162 / LRV ≈ 8.4%
    2. Grau Pearl / 9966, LZ7N
      #44484a
      ΔE = 3.652 / LRV ≈ 6.4%
  52. Levis

    1. Full Grey
      #4f4c4b
      ΔE = 3.180 / LRV ≈ 7.3%
    2. Clear Grey B70
      #505354
      ΔE = 3.691 / LRV ≈ 8.5%
  53. Resene

    1. Deep Space M51-009-077
      #4c4945
      ΔE = 3.229 / LRV ≈ 6.7%
    2. Mako N46-005-209
      #505555
      ΔE = 3.879 / LRV ≈ 8.9%
  54. Pratt & Lambert

    1. Graphite 18-18
      #434641
      ΔE = 3.262 / LRV ≈ 6.0%
    2. Gun Powder 33-15
      #535556
      ΔE = 4.481 / LRV ≈ 9.0%
  55. California Paints

    1. DE 6315 - Black Pool
      #4f5552
      ΔE = 3.322 / LRV ≈ 8.8%
    2. DE 6392 - The Met
      #524a46
      ΔE = 5.158 / LRV ≈ 7.1%
  56. AMC

    1. Cruiser Gray
      #53514d
      ΔE = 3.405 / LRV ≈ 8.3%
    2. Gray Mist
      #555553
      ΔE = 4.163 / LRV ≈ 9.1%
  57. Sto

    1. 36342
      #495149
      ΔE = 3.455 / LRV ≈ 7.8%
  58. Mylands of London

    1. Shepherds Bush Green
      #4a4d44
      ΔE = 3.479 / LRV ≈ 7.2%
    2. Laurel
      #404b4d
      ΔE = 4.183 / LRV ≈ 6.7%
  59. Old Citadel

    1. Charadon Granite
      #4d4a4a
      ΔE = 3.494 / LRV ≈ 7.0%
  60. Vallejo Model Color

    1. German Grey (995)
      #4d4a4a
      ΔE = 3.494 / LRV ≈ 7.0%
  61. Reaper Master

    1. Pure Black (9103)
      #4d4a4a
      ΔE = 3.494 / LRV ≈ 7.0%
  62. Vallejo Game Color

    1. Heavy Charcoal (155)
      #4d4a4a
      ΔE = 3.494 / LRV ≈ 7.0%
  63. Dupont

    1. CAS871
      #404a44
      ΔE = 3.500 / LRV ≈ 6.4%
    2. CAS839
      #48473d
      ΔE = 5.181 / LRV ≈ 6.2%
  64. Wattyl

    1. Grey Ember / A39W
      #4a4a4c
      ΔE = 3.557 / LRV ≈ 6.9%
  65. New Look

    1. Turbo Charged / A04-09
      #4a4a4c
      ΔE = 3.557 / LRV ≈ 6.9%
  66. Crown Paint

    1. Film Noir
      #545351
      ΔE = 3.712 / LRV ≈ 8.7%
    2. Penny Black
      #454749
      ΔE = 3.889 / LRV ≈ 6.3%
  67. Lascaux

    1. Oxide olive brown / 164
      #4b4a42
      ΔE = 3.741 / LRV ≈ 6.8%
    2. Mars­ black / 182
      #42474b
      ΔE = 4.952 / LRV ≈ 6.2%
  68. Sico

    1. 6207-83 Black Ice
      #494741
      ΔE = 3.778 / LRV ≈ 6.3%
    2. 6209-73 Wolf
      #494f53
      ΔE = 4.385 / LRV ≈ 7.6%
  69. Games Workshop - Citadel

    1. Eshin Grey
      #4a4f52
      ΔE = 3.780 / LRV ≈ 7.7%
    2. Mechanicus Standard Grey
      #3d4b4d
      ΔE = 4.971 / LRV ≈ 6.6%
  70. Marston & Langinger

    1. Greyfriars
      #454c4f
      ΔE = 3.834 / LRV ≈ 7.0%
    2. Mullet
      #4b4f45
      ΔE = 4.045 / LRV ≈ 7.5%
  71. Volvo

    1. Ascot Grey / VW-022
      #54544f
      ΔE = 3.853 / LRV ≈ 8.8%
  72. Humbrol

    1. 32 Dark Grey
      #464e51
      ΔE = 3.917 / LRV ≈ 7.3%
  73. Colorhouse

    1. Metal .05
      #535654
      ΔE = 4.009 / LRV ≈ 9.1%
    2. Metal .06
      #3f4647
      ΔE = 4.160 / LRV ≈ 5.9%
  74. Steel Primer Paste (Dtm)

    1. Ral Telegrau 1 Mat / 7045
      #44494c
      ΔE = 4.024 / LRV ≈ 6.5%
  75. Nature Paint

    1. Chough
      #4f5355
      ΔE = 4.064 / LRV ≈ 8.5%
  76. Dulux

    1. Pure Cocoa
      #534f49
      ΔE = 4.084 / LRV ≈ 7.9%
    2. Night Jewels 2
      #555656
      ΔE = 4.677 / LRV ≈ 9.3%
  77. Kelly-Moore

    1. In the Dark / KM3784-5
      #48494c
      ΔE = 4.094 / LRV ≈ 6.7%
    2. Dark Moon / KM3848-5
      #54554f
      ΔE = 4.158 / LRV ≈ 8.9%
  78. British Standard

    1. BS 4800 18 B 27 - Grey
      #404a4c
      ΔE = 4.105 / LRV ≈ 6.5%
    2. BS381 224 - Deep bronze green
      #45483d
      ΔE = 5.209 / LRV ≈ 6.2%
  79. Peintures MF

    1. Tornade
      #404444
      ΔE = 4.215 / LRV ≈ 5.6%
  80. Porter Paints

    1. Dark As Night / 506-7
      #3d4646
      ΔE = 4.290 / LRV ≈ 5.8%
    2. Black Forest / 555-7
      #434b4f
      ΔE = 4.583 / LRV ≈ 6.8%
  81. Sigma

    1. Natural Green / 6012
      #3c4a47
      ΔE = 4.373 / LRV ≈ 6.3%
    2. Orange Terra / S 8005-Y50R
      #4f4a41
      ΔE = 5.237 / LRV ≈ 6.9%
  82. Australian Standard AS2700

    1. N65 Graphite Grey
      #44474a
      ΔE = 4.374 / LRV ≈ 6.2%
  83. Colortrend

    1. 0585
      #55554f
      ΔE = 4.378 / LRV ≈ 9.0%
    2. Sturgis Gray
      #57554f
      ΔE = 4.903 / LRV ≈ 9.1%
  84. Federal Standard

    1. Federal Standard 35042
      #454a4e
      ΔE = 4.436 / LRV ≈ 6.7%
    2. Federal Standard 37038
      #424243
      ΔE = 5.184 / LRV ≈ 5.5%
  85. Model Master

    1. Model Master 1791
      #555754
      ΔE = 4.498 / LRV ≈ 9.4%
    2. Model Master 1950
      #544f4f
      ΔE = 4.558 / LRV ≈ 8.0%
  86. Brillux

    1. 99.00.57
      #47474a
      ΔE = 4.542 / LRV ≈ 6.3%
    2. 84.06.30
      #4b5146
      ΔE = 4.777 / LRV ≈ 7.8%
  87. Pascol

    1. Colorbond® Ironstone PZ5110
      #4c5155
      ΔE = 4.628 / LRV ≈ 8.1%
  88. GM / General Motors

    1. Medium Pebble Gray
      #535856
      ΔE = 4.669 / LRV ≈ 9.5%
    2. Phanotm Gray
      #43494e
      ΔE = 5.184 / LRV ≈ 6.5%
  89. Tollens

    1. T2040-6
      #404b42
      ΔE = 4.738 / LRV ≈ 6.5%
    2. T2134-4
      #535957
      ΔE = 5.043 / LRV ≈ 9.7%
  90. Dutch Boy

    1. Pine
      #42514a
      ΔE = 4.832 / LRV ≈ 7.5%
    2. Rivet-ing
      #4f4842
      ΔE = 5.184 / LRV ≈ 6.7%
  91. 1829

    1. Jet Black
      #444548
      ΔE = 4.931 / LRV ≈ 6.0%
  92. Tikkurila

    1. 581X
      #4e574f
      ΔE = 4.990 / LRV ≈ 9.0%
    2. X497 / Lava
      #585650
      ΔE = 5.237 / LRV ≈ 9.3%
  93. Magnolia Home

    1. Prairie Smoke / JG-141
      #545052
      ΔE = 5.014 / LRV ≈ 8.2%

HTML&CSS例

#494d4a前景

異体同心。

<p style="color: #494d4a">…</p>

#494d4a背景

自業自得。

<p style="background-color: #494d4a">…</p>

#494d4aテキストに影をつける

馬鹿は死ななきゃ治らない。

<p style="text-shadow: 0.1em 0.1em 0.15em #494d4a">…</p>

構成表

色空間変換

十進
4803914
二進法
01001001, 01001101, 01001010
十六進法
#494d4a
LRV
≈ 7.2%
最も近い短い16進数
#444 ΔE = 4.312
RGB
rgb(73, 77, 74)
RGBA
rgba(73, 77, 74, 1.0)
rg色度
r: 0.326, g: 0.344, b: 0.330
RYB
赤色: 28.627%, 黄色: 29.882%, 青色: 30.196%
Android/android.graphics.Color
-11973302/0xff494d4a
HSL
hsl(135, 3%, 29%)
HSLA
hsla(135, 3%, 29%, 1.0)
HSV/HSB
色相: 135° (135.000), 飽和: 5% (0.052), 値: 30% (0.302)
HSP
色相: 135.000, 飽和: 5.195%, 知覚される明るさ: 29.602%
HSLuv(HUSL)
H: 138.186, S: 6.871, L: 32.299
Cubehelix
H: -237.235, S: 0.031, L: 0.296
TSL
T: -0.724, S: 0.017, L: 0.296
CMYK
シアン色: 5% (0.052), マゼンタ色: 0% (0.000), 黄色: 4% (0.039), キー・プレート: 70% (0.698)
CMY
シアン色: 71% (0.714), マゼンタ色: 70% (0.698), 黄色: 71% (0.710)
XYZ
X: 6.637, Y: 7.219, Z: 7.521
xyY
x: 0.310, y: 0.338, Y: 7.219
Lab色空間
L: 32.299, a: -2.288, b: 1.215
CIELuv
L: 32.299, u: -1.984, v: 1.774
CIELCH/LCHab
L: 32.299, C: 2.590, H: 152.037
CIELUV/LCHuv
L: 32.299, C: 2.661, H: 138.186
Hunter-Lab
L: 26.867, a: -2.921, b: 2.210
CIECAM02
J: 23.570, C: 3.951, h: 162.575, Q: 95.650, M: 3.455, s: 19.005, H: 198.410
OSA-UCS
明度: -10.065, 黄色: 0.132, 緑色: 0.485
LMS
L: 6.744, M: 7.629, S: 7.514
YCbCr
Y: 80.821, Cb: 127.275, Cr: 126.457
YCoCg
Y: 75.250, Cg: 1.750, Co: 18.000
YDbDr
Y: 75.462, Db: -2.199, Dr: 4.681
YPbPr
Y: 75.932, Pb: -1.040, Pr: -1.862
xvYCC
Y: 81.212, Cb: 127.086, Cr: 126.364
YIQ
Y: 75.462, I: -1.419, Q: -1.779
YUV
Y: 75.462, U: -0.719, V: -2.160
マンセルカラーシステム
10G 3/1 ΔE = 2.535
ブランドカラー
WordPress (grey) ΔE = 3.652

ランダム色