#21809B#21809B

#21809B is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 55.9% C 0.093 H 221.7°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#21809B
RGB	rgb(33, 128, 155)
HSL	hsl(193, 65%, 37%)
HSV	hsv(193, 79%, 61%)
CMYK	cmyk(78.7%, 17.4%, 0%, 39.2%)
CIE-LAB	lab(49.65, -17.29, -22.17)
CIE-LCH	lch(49.65, 28.11, 232.05°)
OKLab	oklab(55.89% -0.0696 -0.0621)
OKLCH	oklch(55.89% 0.093 221.7)
XYZ	xyz(14.2603, 18.1265, 33.7512)
Luminance	0.1813 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21809B #9B3C21

analogous

#219B79 #21809B #21439B

triadic

#21809B #9B2180 #809B21

tetradic

#21809B #79219B #9B3C21 #439B21

square

#21809B #79219B #9B3C21 #439B21

split-complementary

#21809B #9B2143 #9B7921

monochromatic

#0C2D36 #165669 #21809B #2CAACD #5ABFDC

Accessibility & contrast

On white

4.54

#21809B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#21809B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #21809B

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21809B	#FFFFFF	#000000	##000000
##21809B	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#707D9C

Deuteranopia (green-blind)

#60719B

Tritanopia (blue-blind)

#008889

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #21809b;
/* rgb */ color: rgb(33, 128, 155);
/* oklch */ color: oklch(55.9% 0.093 221.7);

Tailwind

colors: {
  custom: {
    50: '#71a5b8',
    500: '#21809b',
    950: '#000000',
  },
}

SCSS

$custom: #21809b;
$custom-light: #71a5b8;
$custom-dark: #000000;

JSON

{
  "hex": "#21809b",
  "rgb": {
    "r": 33,
    "g": 128,
    "b": 155
  },
  "hsl": {
    "h": 193.279,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.55886,
    "c": 0.09324,
    "h": 221.7
  },
  "luminance": 0.18128
}

Semantic roles & 50–950 ramp

primary

#21809B

secondary

#C06F58

accent

#6540E8

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #21809B

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

Preview Lab → · Contrast checker → · Palette generator →