#81B300 Hex Color
An intense, high-energy saturated lime green
#81b300 is an intense, saturated lime that demands immediate attention. Because it is so loud, use this hex code sparingly as a 10% accent color rather than a large-scale background. Black text offers excellent 8.4:1 contrast against this shade, making it ideal for high-visibility UI buttons. Pair it with deep charcoal or slate to ground the intensity of the color.
Questions about #81b300
What is #81b300 in RGB, HSL and CMYK?
In RGB, #81b300 is rgb(129, 179, 0), in HSL hsl(77, 100%, 35%) and in CMYK 28%, 0%, 100%, 30%.
How should I effectively use #81b300 in a UI design?
Because #81b300 is extremely intense, treat it as a deliberate 10% accent rather than a primary fill. It excels in high-visibility contexts like primary call-to-action buttons or alert icons, especially when paired with charcoal or slate text to anchor the composition.
Is #81b300 readable on white or black?
#81b300 has a 2.50:1 contrast ratio on white and 8.38:1 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.