#FF0101 Hex Color
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This highly saturated red demands immediate attention. Since it dominates any layout, avoid using #ff0101 for large backgrounds. Reserve this intense hex code for small call to action buttons or critical alert badges. Black text creates a readable 5.3:1 contrast ratio against this hue, which meets accessibility standards for small body text. Use it sparingly to guide the viewer through your UI.
Questions about #ff0101
What is #ff0101 in RGB, HSL and CMYK?
In RGB, #ff0101 is rgb(255, 1, 1), in HSL hsl(0, 100%, 50%) and in CMYK 0%, 100%, 100%, 0%.
When should I use #ff0101 in a UI design?
Use #ff0101 primarily for small call-to-action buttons or critical alerts where you need to draw the user's eye instantly. Because this red dominates a layout, avoid using it for large background areas or body text.
Is #ff0101 readable on white or black?
#ff0101 has a 3.99:1 contrast ratio on white and 5.25:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it works only for large text (24px, or 18.5px bold) and on black it works for body text. Try other pairs in the contrast checker.