#21A0BB#21A0BB

#21A0BB is a light, moderate cyan. Relative luminance 0.291; OKLCH L 65.3% C 0.109 H 216.6°. Best body text is #000000 at 6.81:1 contrast (WCAG AA passes).

Color values

HEX	#21A0BB
RGB	rgb(33, 160, 187)
HSL	hsl(191, 70%, 43%)
HSV	hsv(191, 82%, 73%)
CMYK	cmyk(82.4%, 14.4%, 0%, 26.7%)
CIE-LAB	lab(60.83, -23.39, -23.31)
CIE-LCH	lch(60.83, 33.02, 224.90°)
OKLab	oklab(65.29% -0.0879 -0.0652)
OKLCH	oklch(65.29% 0.109 216.6)
XYZ	xyz(22.1638, 29.0500, 51.4431)
Luminance	0.2905 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21A0BB #BB3C21

analogous

#21BB89 #21A0BB #2153BB

triadic

#21A0BB #BB21A0 #A0BB21

tetradic

#21A0BB #8921BB #BB3C21 #53BB21

square

#21A0BB #8921BB #BB3C21 #53BB21

split-complementary

#21A0BB #BB2153 #BB8921

monochromatic

#0F4753 #187387 #21A0BB #3DC1DD #71D1E6

Accessibility & contrast

On white

3.08

#21A0BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.81

#21A0BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #21A0BB

6.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21A0BB	#FFFFFF	#000000	##000000
##21A0BB	1.00	3.08	6.81	6.81
#FFFFFF	3.08	1.00	21.00	21.00
#000000	6.81	21.00	1.00	1.00
##000000	6.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8E9BBC

Deuteranopia (green-blind)

#7A8CBB

Tritanopia (blue-blind)

#00AAA8

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #21a0bb;
/* rgb */ color: rgb(33, 160, 187);
/* oklch */ color: oklch(65.3% 0.109 216.6);

Tailwind

colors: {
  custom: {
    50: '#79bccf',
    500: '#21a0bb',
    950: '#000000',
  },
}

SCSS

$custom: #21a0bb;
$custom-light: #79bccf;
$custom-dark: #000000;

JSON

{
  "hex": "#21a0bb",
  "rgb": {
    "r": 33,
    "g": 160,
    "b": 187
  },
  "hsl": {
    "h": 190.519,
    "s": 70,
    "l": 43.137
  },
  "oklch": {
    "l": 0.65292,
    "c": 0.10941,
    "h": 216.6
  },
  "luminance": 0.29053
}

Semantic roles & 50–950 ramp

primary

#21A0BB

secondary

#CC7C6B

accent

#5A3BED

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1213

muted

#7C8182

Preview Lab

Preview with #21A0BB

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →