#E9F240 Hex Color
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#e9f240 is a high-visibility, neon yellow that demands immediate attention. Because of its extreme brightness, it functions best as a small accent or call-to-action button rather than a background color. Pair it with deep charcoal or matte black to ground its intensity and ensure readability. The hex code for this electric tone is #e9f240, and black text offers excellent contrast against it.
Questions about #e9f240
What is #e9f240 in RGB, HSL and CMYK?
In RGB, #e9f240 is rgb(233, 242, 64), in HSL hsl(63, 87%, 60%) and in CMYK 4%, 0%, 74%, 5%. Browse more shades of yellow with names and hex codes.
How should I use #e9f240 in web design without overwhelming the viewer?
#e9f240 is extremely intense, so it functions best as a small, high-impact accent rather than a background color. Use it for call-to-action buttons or small UI elements where you need to draw immediate attention, grounding it with deep charcoal or black text.
Why is #e9f240 difficult to use as a primary background color?
Because of its extreme brightness, #e9f240 causes eye strain when applied to large surface areas. It lacks the neutral depth required for comfortable long-form reading, so it is safer to reserve this electric tone for interactive highlights or purposeful design alerts.
Is #e9f240 readable on white or black?
#e9f240 has a 1.21:1 contrast ratio on white and 17.23:1 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.