1. 

   Natural Color System / NCS - S 7502-B

   hsl(220, 0%, 0%) / cyan: 0.04, magenta: 0.03, yellow: 0.00, key: 0.69 / LRV ≈ 7.2%

2. 

   Beckers - Diesel 793 / S 7502-B

   hsl(240, 0%, 0%) / cyan: 0.07, magenta: 0.07, yellow: 0.00, key: 0.73 / LRV ≈ 5.0%

3. 

   Sigma - Cool Blue / S 7502-B

   hsl(187, 0%, 0%) / cyan: 0.09, magenta: 0.01, yellow: 0.00, key: 0.65 / LRV ≈ 9.4%

4. 

   Natural Color System / NCS - S 7502-Y

   hsl(42, 0%, 0%) / cyan: 0.00, magenta: 0.04, yellow: 0.12, key: 0.67 / LRV ≈ 8.1%

5. 

   Natural Color System / NCS - S 7502-R

   hsl(5, 0%, 0%) / cyan: 0.00, magenta: 0.12, yellow: 0.13, key: 0.67 / LRV ≈ 7.5%

6. 

   Natural Color System / NCS - S 7502-G

   hsl(150, 0%, 0%) / cyan: 0.03, magenta: 0.00, yellow: 0.01, key: 0.69 / LRV ≈ 7.5%

7. 

   Natural Color System / NCS - S 1502-B

   hsl(180, 0%, 1%) / cyan: 0.03, magenta: 0.00, yellow: 0.00, key: 0.18 / LRV ≈ 62.9%

8. 

   Natural Color System / NCS - S 4005-B

   hsl(203, 0%, 1%) / cyan: 0.08, magenta: 0.03, yellow: 0.00, key: 0.38 / LRV ≈ 30.8%

9. 

   Natural Color System / NCS - S 3020-B

   hsl(205, 0%, 1%) / cyan: 0.27, magenta: 0.11, yellow: 0.00, key: 0.33 / LRV ≈ 30.2%

10. 

    Natural Color System / NCS - S 0505-B

    hsl(196, 0%, 1%) / cyan: 0.05, magenta: 0.01, yellow: 0.00, key: 0.07 / LRV ≈ 81.1%