#21BCD4 Color
#21BCD4 is rgb(33, 188, 212) in RGB and hsl(188, 73%, 48%) in HSL. The closest CSS named color is DarkTurquoise. Black text is most readable on this background.
#21BCD4
HEX
#21BCD4RGB
rgb(33, 188, 212)HSL
hsl(188, 73%, 48%)HSV
hsv(188, 84%, 83%)OKLCH
oklch(73.2% 0.122 211.5)CMYK
cmyk(84%, 11%, 0%, 17%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #21BCD4 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text2.28:1AA normal ✗AA large ✗AAA normal ✗
TextBlack text9.21:1AA normal ✓AA large ✓AAA normal ✓
Color Harmonies
Colors that pair well with #21BCD4 based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #21BCD4, useful for hover states, backgrounds, and text variants.