#EFFF12 Hex Color
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This extremely bright, high-chroma yellow demands immediate attention. Because of its intense saturation, #efff12 works best as a 10% accent color to draw the eye toward sale buttons or key call-to-action elements. It creates a bold, jarring contrast against charcoal or deep navy backgrounds. While readable with black text, use it sparingly as a full background, as its luminosity can quickly overwhelm a layout.
Questions about #efff12
What is #efff12 in RGB, HSL and CMYK?
In RGB, #efff12 is rgb(239, 255, 18), in HSL hsl(64, 100%, 54%) and in CMYK 6%, 0%, 93%, 0%.
What colors pair well with the intense #efff12?
Because #efff12 is so luminous, it pairs best with dark, grounding neutrals like charcoal or deep navy. These dark backgrounds provide the necessary contrast to let the yellow pop without overwhelming the viewer's eye or making the text unreadable.
Is #efff12 suitable for text on a white background?
Avoid using #efff12 for text on a white background because it fails accessibility standards due to poor contrast. This color should be reserved for UI elements like buttons or icons rather than body text or fine details that require readability.
Is #efff12 readable on white or black?
#efff12 has a 1.10:1 contrast ratio on white and 18.98:1 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.