#51DDF0 Color
#51DDF0 is rgb(81, 221, 240) in RGB and hsl(187, 84%, 63%) in HSL. The closest CSS named color is Turquoise. Black text is most readable on this background.
#51DDF0
HEX
#51DDF0RGB
rgb(81, 221, 240)HSL
hsl(187, 84%, 63%)HSV
hsv(187, 66%, 94%)OKLCH
oklch(83% 0.121 207.9)CMYK
cmyk(66%, 8%, 0%, 6%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #51DDF0 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text1.62:1AA normal ✗AA large ✗AAA normal ✗
TextBlack text12.95:1AA normal ✓AA large ✓AAA normal ✓
Color Harmonies
Colors that pair well with #51DDF0 based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #51DDF0, useful for hover states, backgrounds, and text variants.