#40B300 Hex Color

#40b300 pairs well with white, black, charcoal, deep navy, and muted natural tones that balance its bright yellow-green energy while keeping the design grounded. For stronger contrast, use a red-violet accent sparingly beside it.

#40b300 reads as a warm green because its noticeable yellow undertone shifts it away from blue-green hues, giving the shade an energetic, lively character that suits action accents and nature-focused designs needing more visual punch.

#40b300 offers strong readability with black text at about a 7.7:1 contrast ratio, while white text provides much weaker contrast, so black is the safer choice for body copy, labels, and other small interface text.