#21383B Color

#21383B is rgb(33, 56, 59) in RGB and hsl(187, 28%, 18%) in HSL. The closest CSS named color is DarkSlateGray. White text is most readable on this background.

#21383B

HEX#21383B

RGBrgb(33, 56, 59)

HSLhsl(187, 28%, 18%)

HSVhsv(187, 44%, 23%)

OKLCHoklch(32.3% 0.029 206.3)

CMYKcmyk(44%, 5%, 0%, 77%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #21383B background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text12.4:1AA normal ✓AA large ✓AAA normal ✓

TextBlack text1.69:1AA normal ✗AA large ✗AAA normal ✗

Color Harmonies

Colors that pair well with #21383B based on color wheel relationships. Click any swatch for its full breakdown.

Base#21383B Complementary#3B2421 Analogous#213B31 Analogous#212B3B Triadic#3B2138 Triadic#383B21

Tints & Shades

Lighter tints and darker shades of #21383B, useful for hover states, backgrounds, and text variants.

Tints

#355A5F #4B7F86 #629FA7 #89B7BD #ADCDD1 #D5E5E7

Shades

#1D3234 #1A2B2E #162527 #121F21 #0F191A #0B1314

Use #21383B in Our Tools

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