#40F000 Hex Color
Online color picker to view shades, tints, color codes, and complementary colors
#40f000 is a neon green at full volume. Its high saturation and lightness give it a glowing, electric quality that reads energetic rather than calm. That intensity makes it a poor full background but a strong accent, so treat it as the 10% in a 60/30/10 palette. It flatters deep charcoal, and black text stays readable on it at 13.7:1 contrast.
Questions about #40f000
What is #40f000 in RGB, HSL and CMYK?
In RGB, #40f000 is rgb(64, 240, 0), in HSL hsl(104, 100%, 47%) and in CMYK 73%, 0%, 100%, 6%.
What text color should you use on #40f000?
Black text is the safe choice. #40f000 reaches about 13.7:1 contrast with black, well above the 4.5:1 that WCAG AA requires for body text, while white text on it fails badly.
What colors pair well with #40f000?
Deep, low-saturation colors balance its intensity best. Try charcoal for a grounded, modern pairing, or a dark plum if you want the green to feel less industrial.
Is #40f000 readable on white or black?
#40f000 has a 1.53:1 contrast ratio on white and 13.68:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it is too faint for text and on black it works for body text. Try other pairs in the contrast checker.