#21839B#21839B

#21839B is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 56.6% C 0.093 H 218.6°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#21839B
RGB	rgb(33, 131, 155)
HSL	hsl(192, 65%, 37%)
HSV	hsv(192, 79%, 61%)
CMYK	cmyk(78.7%, 15.5%, 0%, 39.2%)
CIE-LAB	lab(50.59, -18.92, -20.71)
CIE-LCH	lch(50.59, 28.05, 227.60°)
OKLab	oklab(56.65% -0.0726 -0.0579)
OKLCH	oklch(56.65% 0.093 218.6)
XYZ	xyz(14.6574, 18.9207, 33.8835)
Luminance	0.1892 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21839B #9B3921

analogous

#219B76 #21839B #21469B

triadic

#21839B #9B2183 #839B21

tetradic

#21839B #76219B #9B3921 #469B21

square

#21839B #76219B #9B3921 #469B21

split-complementary

#21839B #9B2146 #9B7621

monochromatic

#0C2E36 #165869 #21839B #2CAECD #5AC2DC

Accessibility & contrast

On white

4.39

#21839B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#21839B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #21839B

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21839B	#FFFFFF	#000000	##000000
##21839B	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#747F9C

Deuteranopia (green-blind)

#64739B

Tritanopia (blue-blind)

#008B8B

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #21839b;
/* rgb */ color: rgb(33, 131, 155);
/* oklch */ color: oklch(56.6% 0.093 218.6);

Tailwind

colors: {
  custom: {
    50: '#71a7b8',
    500: '#21839b',
    950: '#000000',
  },
}

SCSS

$custom: #21839b;
$custom-light: #71a7b8;
$custom-dark: #000000;

JSON

{
  "hex": "#21839b",
  "rgb": {
    "r": 33,
    "g": 131,
    "b": 155
  },
  "hsl": {
    "h": 191.803,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.56646,
    "c": 0.09286,
    "h": 218.6
  },
  "luminance": 0.18922
}

Semantic roles & 50–950 ramp

primary

#21839B

secondary

#C06C58

accent

#6140E8

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #21839B

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

Preview Lab → · Contrast checker → · Palette generator →