1. 

   Natural Color System / NCS - S 4040-Y90R

   hsl(4, 0%, 0%) / cyan: 0.00, magenta: 0.59, yellow: 0.63, key: 0.40 / LRV ≈ 10.6%

2. 

   Sigma - Warm Red / S 4040-Y90R

   hsl(8, 0%, 0%) / cyan: 0.00, magenta: 0.38, yellow: 0.44, key: 0.41 / LRV ≈ 15.0%

3. 

   Natural Color System / NCS - S 4040-B

   hsl(202, 1%, 0%) / cyan: 0.75, magenta: 0.28, yellow: 0.00, key: 0.51 / LRV ≈ 9.1%

4. 

   Natural Color System / NCS - S 4040-G80Y

   hsl(49, 0%, 0%) / cyan: 0.00, magenta: 0.12, yellow: 0.66, key: 0.50 / LRV ≈ 16.6%

5. 

   Natural Color System / NCS - S 4040-B80G

   hsl(166, 1%, 0%) / cyan: 0.81, magenta: 0.00, yellow: 0.19, key: 0.58 / LRV ≈ 11.4%

6. 

   Natural Color System / NCS - S 4040-G

   hsl(152, 1%, 0%) / cyan: 0.68, magenta: 0.00, yellow: 0.31, key: 0.58 / LRV ≈ 11.6%

7. 

   Natural Color System / NCS - S 4040-Y40R

   hsl(20, 1%, 0%) / cyan: 0.00, magenta: 0.48, yellow: 0.73, key: 0.37 / LRV ≈ 13.9%

8. 

   Natural Color System / NCS - S 4040-R40B

   hsl(322, 0%, 0%) / cyan: 0.00, magenta: 0.54, yellow: 0.20, key: 0.53 / LRV ≈ 7.8%

9. 

   Natural Color System / NCS - S 4040-G10Y

   hsl(139, 0%, 0%) / cyan: 0.56, magenta: 0.00, yellow: 0.39, key: 0.58 / LRV ≈ 11.7%

10. 

    Natural Color System / NCS - S 4040-B70G

    hsl(171, 1%, 0%) / cyan: 0.82, magenta: 0.00, yellow: 0.12, key: 0.59 / LRV ≈ 10.8%