#21809C#21809C

#21809C is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 55.9% C 0.094 H 222.6°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#21809C
RGB	rgb(33, 128, 156)
HSL	hsl(194, 65%, 37%)
HSV	hsv(194, 79%, 61%)
CMYK	cmyk(78.8%, 17.9%, 0%, 38.8%)
CIE-LAB	lab(49.69, -16.94, -22.69)
CIE-LCH	lch(49.69, 28.31, 233.25°)
OKLab	oklab(55.93% -0.0692 -0.0636)
OKLCH	oklch(55.93% 0.094 222.6)
XYZ	xyz(14.3446, 18.1602, 34.1953)
Luminance	0.1816 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21809C #9C3D21

analogous

#219C7B #21809C #21429C

triadic

#21809C #9C2180 #809C21

tetradic

#21809C #7B219C #9C3D21 #429C21

square

#21809C #7B219C #9C3D21 #429C21

split-complementary

#21809C #9C2142 #9C7B21

monochromatic

#0C2D37 #165769 #21809C #2CA9CF #5BBFDC

Accessibility & contrast

On white

4.53

#21809C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#21809C on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #21809C

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21809C	#FFFFFF	#000000	##000000
##21809C	1.00	4.53	4.63	4.63
#FFFFFF	4.53	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)

#707D9D

Deuteranopia (green-blind)

#5F719C

Tritanopia (blue-blind)

#008989

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #21809c;
/* rgb */ color: rgb(33, 128, 156);
/* oklch */ color: oklch(55.9% 0.094 222.6);

Tailwind

colors: {
  custom: {
    50: '#71a5b9',
    500: '#21809c',
    950: '#000000',
  },
}

SCSS

$custom: #21809c;
$custom-light: #71a5b9;
$custom-dark: #000000;

JSON

{
  "hex": "#21809c",
  "rgb": {
    "r": 33,
    "g": 128,
    "b": 156
  },
  "hsl": {
    "h": 193.659,
    "s": 65.079,
    "l": 37.059
  },
  "oklch": {
    "l": 0.55933,
    "c": 0.09395,
    "h": 222.6
  },
  "luminance": 0.18162
}

Semantic roles & 50–950 ramp

primary

#21809C

secondary

#C17058

accent

#6640E8

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #21809C

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

Preview Lab → · Contrast checker → · Palette generator →