#91FFFF Hex Color
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This luminous, pastel cyan feels airy and cool. Because it is highly saturated with high lightness, #91ffff can easily overpower a design if used as a base. It works best as an accent color for digital interfaces or UI elements where you need to draw immediate attention. Pair it with deep charcoals to ensure text readability, as the hex code provides excellent contrast for black type.
Questions about #91ffff
What is #91ffff in RGB, HSL and CMYK?
In RGB, #91ffff is rgb(145, 255, 255), in HSL hsl(180, 100%, 78%) and in CMYK 43%, 0%, 0%, 0%.
Is #91ffff appropriate for a primary brand color?
Using #91ffff as a primary brand color is risky because it is visually overwhelming and lacks sufficient contrast against white backgrounds. It serves much better as a secondary highlight or alert color to draw attention to specific, actionable elements.
Is #91ffff readable on white or black?
#91ffff has a 1.16:1 contrast ratio on white and 17.95:1 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.