#2588FF Hex Color
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Reach for #2588ff when a call to action needs to grab attention without turning red. This bold blue is highly saturated and reads cool, yet it stays practical: black text on it hits about 6.0:1 contrast, enough for WCAG AA body copy. It shines as an accent or button color in finance, tech, and healthcare interfaces, and it looks richer against deep navy than plain white.
Questions about #2588ff
What is #2588ff in RGB, HSL and CMYK?
In RGB, #2588ff is rgb(37, 136, 255), in HSL hsl(213, 100%, 57%) and in CMYK 85%, 47%, 0%, 0%.
What text color works best on #2588ff?
Black text is the safe choice. It reaches about 6.0:1 contrast against #2588ff, which clears the WCAG AA threshold of 4.5:1 for body text. White text only manages roughly 3.5:1, so save it for large headings or add a darker overlay.
What colors pair well with #2588ff?
Is #2588ff readable on white or black?
#2588ff has a 3.47:1 contrast ratio on white and 6.04:1 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.