#EFD805 Hex Color
Online color picker to view shades, tints, color codes, and complementary colors

This high-energy, neon yellow demands attention, making it ideal for sale signage or call-to-action buttons where visibility is the priority. The hex code for this shade is #efd805. Because it commands such focus, use it sparingly as a 10% accent rather than a background. Pair it with deep charcoal text, as the high contrast ensures legibility and keeps the design feeling modern.
Questions about #efd805
What is #efd805 in RGB, HSL and CMYK?
In RGB, #efd805 is rgb(239, 216, 5), in HSL hsl(54, 96%, 48%) and in CMYK 0%, 10%, 98%, 6%.
What colors pair best with #efd805 for modern design?
This neon yellow pairs perfectly with deep charcoal or near-black tones because the high contrast ensures excellent legibility. Avoid pairing it with lighter pastels or other bright neons, as these combinations can overwhelm the eye and create visual vibration.
Is #efd805 suitable for use as a primary website background?
Using #efd805 as a full page background is generally discouraged because its intense saturation can quickly cause eye strain. Reserve this shade for small, critical interface elements like call-to-action buttons, warning icons, or thin borders where you need immediate user focus.
Is #efd805 readable on white or black?
#efd805 has a 1.44:1 contrast ratio on white and 14.49:1 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.