#21B5B5 Color

#21B5B5 is rgb(33, 181, 181) in RGB and hsl(180, 69%, 42%) in HSL. The closest CSS named color is LightSeaGreen. Black text is most readable on this background.

#21B5B5

HEX#21B5B5

RGBrgb(33, 181, 181)

HSLhsl(180, 69%, 42%)

HSVhsv(180, 82%, 71%)

OKLCHoklch(70.3% 0.114 194.9)

CMYKcmyk(82%, 0%, 0%, 29%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #21B5B5 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text2.52:1AA normal ✗AA large ✗AAA normal ✗

TextBlack text8.34:1AA normal ✓AA large ✓AAA normal ✓

Color Harmonies

Colors that pair well with #21B5B5 based on color wheel relationships. Click any swatch for its full breakdown.

Base#21B5B5 Complementary#B52121 Analogous#21B56B Analogous#216BB5 Triadic#B521B5 Triadic#B5B521

Tints & Shades

Lighter tints and darker shades of #21B5B5, useful for hover states, backgrounds, and text variants.

Tints

#28D7D7 #4ADEDE #6CE4E4 #8FEAEA #B1F1F1 #D4F7F7

Shades

#1D9F9F #198686 #157070 #105656 #0C4141 #072727

Use #21B5B5 in Our Tools

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