1. 

   Natural Color System / NCS - S 2020-B30G

   hsl(187, 0%, 1%) / cyan: 0.25, magenta: 0.03, yellow: 0.00, key: 0.24 / LRV ≈ 46.4%

2. 

   Sigma - Cool Blue / S 2020-B30G

   hsl(184, 0%, 1%) / cyan: 0.23, magenta: 0.01, yellow: 0.00, key: 0.19 / LRV ≈ 54.5%

3. 

   Natural Color System / NCS - S 2040-B30G

   hsl(185, 0%, 0%) / cyan: 0.60, magenta: 0.05, yellow: 0.00, key: 0.31 / LRV ≈ 32.1%

4. 

   Natural Color System / NCS - S 3020-B30G

   hsl(188, 0%, 1%) / cyan: 0.27, magenta: 0.04, yellow: 0.00, key: 0.33 / LRV ≈ 34.1%

5. 

   Natural Color System / NCS - S 0510-B30G

   hsl(187, 0%, 1%) / cyan: 0.10, magenta: 0.01, yellow: 0.00, key: 0.09 / LRV ≈ 76.0%

6. 

   Natural Color System / NCS - S 4030-B30G

   hsl(187, 0%, 0%) / cyan: 0.49, magenta: 0.06, yellow: 0.00, key: 0.46 / LRV ≈ 19.1%

7. 

   Natural Color System / NCS - S 1040-B30G

   hsl(186, 1%, 1%) / cyan: 0.51, magenta: 0.05, yellow: 0.00, key: 0.20 / LRV ≈ 45.6%

8. 

   Natural Color System / NCS - S 5010-B30G

   hsl(191, 0%, 0%) / cyan: 0.17, magenta: 0.03, yellow: 0.00, key: 0.49 / LRV ≈ 19.4%

9. 

   Natural Color System / NCS - S 1030-B30G

   hsl(185, 0%, 1%) / cyan: 0.36, magenta: 0.03, yellow: 0.00, key: 0.20 / LRV ≈ 49.6%

10. 

    Natural Color System / NCS - S 2030-B30G

    hsl(186, 0%, 1%) / cyan: 0.41, magenta: 0.04, yellow: 0.00, key: 0.29 / LRV ≈ 36.8%