#21B5B3 Color

#21B5B3 is rgb(33, 181, 179) in RGB and hsl(179, 69%, 42%) in HSL. The closest CSS named color is LightSeaGreen. Black text is most readable on this background.

#21B5B3

HEX#21B5B3

RGBrgb(33, 181, 179)

HSLhsl(179, 69%, 42%)

HSVhsv(179, 82%, 71%)

OKLCHoklch(70.2% 0.115 193.4)

CMYKcmyk(82%, 0%, 1%, 29%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #21B5B3 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 text8.33:1AA normal ✓AA large ✓AAA normal ✓

Color Harmonies

Colors that pair well with #21B5B3 based on color wheel relationships. Click any swatch for its full breakdown.

Base#21B5B3 Complementary#B52124 Analogous#21B569 Analogous#216EB5 Triadic#B321B5 Triadic#B5B321

Tints & Shades

Lighter tints and darker shades of #21B5B3, useful for hover states, backgrounds, and text variants.

Tints

#28D7D5 #4ADEDB #6CE4E2 #8FEAE9 #B1F1F0 #D4F7F7

Shades

#1D9F9D #198684 #15706F #105655 #0C4140 #072726

Use #21B5B3 in Our Tools

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