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-Y50R

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

4. 

   Natural Color System / NCS - S 4030-R40B

   hsl(324, 0%, 0%) / cyan: 0.00, magenta: 0.40, yellow: 0.16, key: 0.49 / LRV ≈ 11.4%

5. 

   Natural Color System / NCS - S 4030-Y20R

   hsl(29, 0%, 0%) / cyan: 0.00, magenta: 0.34, yellow: 0.65, key: 0.36 / LRV ≈ 18.8%

6. 

   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%

7. 

   Natural Color System / NCS - S 4030-G

   hsl(146, 0%, 0%) / cyan: 0.48, magenta: 0.00, yellow: 0.27, key: 0.53 / LRV ≈ 14.9%

8. 

   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%

9. 

   Natural Color System / NCS - S 4030-B

   hsl(203, 0%, 0%) / cyan: 0.53, magenta: 0.20, yellow: 0.00, key: 0.49 / LRV ≈ 12.3%

10. 

    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%