#AA0000 Hex Color
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Heartbeat is an intense, saturated red that commands immediate attention. Its dark, heavy quality makes it less ideal for backgrounds but perfect as an impactful 10% accent in UI design or call-to-action buttons. Pair it with soft cream or charcoal to ground its aggressive energy. Because white text maintains excellent readability against this shade, the hex code #aa0000 remains a strong choice for high-contrast accessibility.
Questions about Heartbeat
What is the hex code for Heartbeat?
Heartbeat is #aa0000. In RGB that is rgb(170, 0, 0), in HSL hsl(0, 100%, 33%) and in CMYK 0%, 100%, 100%, 33%.
What colors pair well with Heartbeat #aa0000?
Heartbeat #aa0000 works best when balanced against neutral, lighter tones to ground its intense energy. You will find that pairing this red with soft cream or charcoal creates a sophisticated, high-contrast look that prevents the color from overwhelming a design.
Is Heartbeat readable on white or black?
Heartbeat has a 7.75:1 contrast ratio on white and 2.70:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it works for body text and on black it is too faint for text. Try other pairs in the contrast checker.