#51B73B Hex Color

Yes, when used as a background with black text. #51b73b reaches about 8.2:1 contrast against black, which clears the WCAG AA requirement of 4.5:1 for body text. Avoid white text on it, since that combination falls short.

Deep plum and charcoal both tame its brightness and make it read richer than it does next to white. For earthy palettes, warm browns and terracotta ground its grassy undertone nicely.