#21B4C4 Color

#21B4C4 is rgb(33, 180, 196) in RGB and hsl(186, 71%, 45%) in HSL. The closest CSS named color is LightSeaGreen. Black text is most readable on this background.

#21B4C4

HEX#21B4C4

RGBrgb(33, 180, 196)

HSLhsl(186, 71%, 45%)

HSVhsv(186, 83%, 77%)

OKLCHoklch(70.6% 0.115 206.6)

CMYKcmyk(83%, 8%, 0%, 23%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #21B4C4 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text2.5:1AA normal ✗AA large ✗AAA normal ✗

TextBlack text8.39:1AA normal ✓AA large ✓AAA normal ✓

Color Harmonies

Colors that pair well with #21B4C4 based on color wheel relationships. Click any swatch for its full breakdown.

Base#21B4C4 Complementary#C43221 Analogous#21C483 Analogous#2162C4 Triadic#C421B4 Triadic#B4C421

Tints & Shades

Lighter tints and darker shades of #21B4C4, useful for hover states, backgrounds, and text variants.

Tints

#32CBDC #51D3E1 #73DCE7 #92E3ED #B5ECF2 #D3F4F8

Shades

#1D9CAA #188490 #146C76 #105860 #0C4046 #07282C

Use #21B4C4 in Our Tools

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