1. 

   Natural Color System / NCS - S 4030-R80B

   hsl(222, 0%, 0%) / cyan: 0.45, magenta: 0.31, yellow: 0.00, key: 0.46 / LRV ≈ 11.3%

2. 

   Sigma - Cool Blue / S 4030-R80B

   hsl(212, 0%, 1%) / cyan: 0.40, magenta: 0.22, yellow: 0.00, key: 0.36 / LRV ≈ 20.3%

3. 

   Natural Color System / NCS - S 4030-Y70R

   hsl(12, 0%, 0%) / cyan: 0.00, magenta: 0.49, yellow: 0.61, key: 0.35 / LRV ≈ 15.0%

4. 

   Natural Color System / NCS - S 4030-G50Y

   hsl(69, 0%, 0%) / cyan: 0.07, magenta: 0.00, yellow: 0.46, key: 0.53 / LRV ≈ 16.9%

5. 

   Natural Color System / NCS - S 4030-Y40R

   hsl(21, 0%, 0%) / cyan: 0.00, magenta: 0.42, yellow: 0.65, key: 0.35 / LRV ≈ 16.8%

6. 

   Natural Color System / NCS - S 4030-B50G

   hsl(177, 0%, 0%) / cyan: 0.55, magenta: 0.00, yellow: 0.03, key: 0.55 / LRV ≈ 14.4%

7. 

   Natural Color System / NCS - S 4030-R30B

   hsl(339, 0%, 0%) / cyan: 0.00, magenta: 0.46, yellow: 0.30, key: 0.45 / LRV ≈ 11.7%

8. 

   Natural Color System / NCS - S 4030-B10G

   hsl(195, 0%, 0%) / cyan: 0.58, magenta: 0.15, yellow: 0.00, key: 0.50 / LRV ≈ 13.0%

9. 

   Natural Color System / NCS - S 4030-R90B

   hsl(213, 0%, 0%) / cyan: 0.47, magenta: 0.26, yellow: 0.00, key: 0.46 / LRV ≈ 12.7%

10. 

    Natural Color System / NCS - S 4030-Y50R

    hsl(18, 0%, 0%) / cyan: 0.00, magenta: 0.45, yellow: 0.64, key: 0.35 / LRV ≈ 16.2%