#FF0404 Hex Color
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#ff0404 is an aggressive, high-chroma red that commands immediate attention. This intense shade is perfect for limited-use accents like call-to-action buttons or emergency alerts, but it can overwhelm a layout if used as a primary background. It pairs cleanly with stark black text, as the contrast ratio is readable for most standard UI applications. The hex code for this powerful red is #ff0404.
Questions about #ff0404
What is #ff0404 in RGB, HSL and CMYK?
In RGB, #ff0404 is rgb(255, 4, 4), in HSL hsl(0, 100%, 51%) and in CMYK 0%, 98%, 98%, 0%.
How should I use #ff0404 in UI design without overwhelming users?
Use #ff0404 sparingly for high-priority items like critical error alerts or conversion-focused call-to-action buttons. Because this red is so aggressive, avoid using it for large backgrounds or body text, as it creates visual fatigue and strains the eyes over time.
What colors pair well with #ff0404 for a balanced design?
This intense red pairs effectively with neutral shades like charcoal or deep slate to ground its energy. For high-contrast interfaces, using it alongside clean white space allows the color to stand out without competing with other vibrant design elements on the screen.
Is #ff0404 readable on white or black?
#ff0404 has a 3.98:1 contrast ratio on white and 5.27:1 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.