RAL - RAL 7030 / Stone Greyhsl(42, 6%, 55%) / cyan: 0.00, magenta: 0.02, yellow: 0.09, key: 0.43 / LRV ≈ 27.2%
Sikkens - G2.04.52 (RAL 7030)hsl(43, 6%, 54%) / cyan: 0.00, magenta: 0.03, yellow: 0.09, key: 0.43 / LRV ≈ 26.7%