1. 

   Natural Color System / NCS - S 7500-N

   hsl(24, 0%, 0%) / cyan: 0.00, magenta: 0.04, yellow: 0.07, key: 0.73 / LRV ≈ 5.7%

2. 

   Sigma - Mineral Grey / S 7500-N

   hsl(165, 0%, 0%) / cyan: 0.04, magenta: 0.00, yellow: 0.01, key: 0.64 / LRV ≈ 10.7%

3. 

   Natural Color System / NCS - S 4500-N

   hsl(22, 0%, 1%) / cyan: 0.00, magenta: 0.05, yellow: 0.08, key: 0.47 / LRV ≈ 21.7%

4. 

   Natural Color System / NCS - S 1500-N

   hsl(26, 0%, 1%) / cyan: 0.00, magenta: 0.05, yellow: 0.09, key: 0.11 / LRV ≈ 69.4%

5. 

   Natural Color System / NCS - S 8500-N

   hsl(15, 0%, 0%) / cyan: 0.00, magenta: 0.06, yellow: 0.08, key: 0.81 / LRV ≈ 2.7%

6. 

   Natural Color System / NCS - S 5000-N

   hsl(13, 0%, 0%) / cyan: 0.00, magenta: 0.06, yellow: 0.07, key: 0.52 / LRV ≈ 17.9%

7. 

   Natural Color System / NCS - S 6000-N

   hsl(20, 0%, 0%) / cyan: 0.00, magenta: 0.06, yellow: 0.09, key: 0.60 / LRV ≈ 11.7%

8. 

   Natural Color System / NCS - S 2000-N

   hsl(26, 0%, 1%) / cyan: 0.00, magenta: 0.06, yellow: 0.10, key: 0.18 / LRV ≈ 57.1%

9. 

   Natural Color System / NCS - S 5500-N

   hsl(24, 0%, 0%) / cyan: 0.00, magenta: 0.05, yellow: 0.09, key: 0.56 / LRV ≈ 14.4%

10. 

    Natural Color System / NCS - S 6500-N

    hsl(15, 0%, 0%) / cyan: 0.00, magenta: 0.07, yellow: 0.09, key: 0.65 / LRV ≈ 9.1%