#21D9ED Color

#21D9ED is rgb(33, 217, 237) in RGB and hsl(186, 85%, 53%) in HSL. The closest CSS named color is Turquoise. Black text is most readable on this background.

#21D9ED

HEX#21D9ED

RGBrgb(33, 217, 237)

HSLhsl(186, 85%, 53%)

HSVhsv(186, 86%, 93%)

OKLCHoklch(81.1% 0.135 207)

CMYKcmyk(86%, 8%, 0%, 7%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #21D9ED background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text1.72:1AA normal ✗AA large ✗AAA normal ✗

TextBlack text12.21:1AA normal ✓AA large ✓AAA normal ✓

Color Harmonies

Colors that pair well with #21D9ED based on color wheel relationships. Click any swatch for its full breakdown.

Base#21D9ED Complementary#ED3621 Analogous#21ED9C Analogous#2173ED Triadic#ED21D9 Triadic#D9ED21

Tints & Shades

Lighter tints and darker shades of #21D9ED, useful for hover states, backgrounds, and text variants.

Tints

#3EDEEF #5FE3F2 #7BE8F4 #9CEEF7 #B8F3F9 #D9F8FC

Shades

#12C5D9 #0FA7B8 #0C8997 #0A6B76 #074D55 #042F34

Use #21D9ED in Our Tools

Hex to RGB Hex to HSL Hex to CMYK Hex to Pantone RGBA to Hex