#21578C#21578C

#21578C is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.8% C 0.104 H 251.0°. Best body text is #FFFFFF at 7.48:1 contrast (WCAG AA passes).

Color values

HEX	#21578C
RGB	rgb(33, 87, 140)
HSL	hsl(210, 62%, 34%)
HSV	hsv(210, 76%, 55%)
CMYK	cmyk(76.4%, 37.9%, 0%, 45.1%)
CIE-LAB	lab(36.05, 1.58, -34.48)
CIE-LCH	lch(36.05, 34.52, 272.62°)
OKLab	oklab(44.85% -0.0339 -0.0982)
OKLCH	oklch(44.85% 0.104 251)
XYZ	xyz(8.7672, 9.0322, 26.0872)
Luminance	0.0903 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21578C #8C5621

analogous

#218C8C #21578C #21218C

triadic

#21578C #8C2157 #578C21

tetradic

#21578C #8C218C #8C5621 #218C21

square

#21578C #8C218C #8C5621 #218C21

split-complementary

#21578C #8C2121 #8C8C21

monochromatic

#0A1929 #15385A #21578C #2D76BE #5194D6

Accessibility & contrast

On white

7.48

#21578C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#21578C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21578C

7.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21578C	#FFFFFF	#000000	##FFFFFF
##21578C	1.00	7.48	2.81	7.48
#FFFFFF	7.48	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E5A8E

Deuteranopia (green-blind)

#2E508B

Tritanopia (blue-blind)

#00646B

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #21578c;
/* rgb */ color: rgb(33, 87, 140);
/* oklch */ color: oklch(44.8% 0.104 251.0);

Tailwind

colors: {
  custom: {
    50: '#6c86ae',
    500: '#21578c',
    950: '#000000',
  },
}

SCSS

$custom: #21578c;
$custom-light: #6c86ae;
$custom-dark: #000000;

JSON

{
  "hex": "#21578c",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 140
  },
  "hsl": {
    "h": 209.72,
    "s": 61.85,
    "l": 33.922
  },
  "oklch": {
    "l": 0.44846,
    "c": 0.10387,
    "h": 251
  },
  "luminance": 0.09033
}

Semantic roles & 50–950 ramp

primary

#21578C

secondary

#B9844F

accent

#9343E5

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #21578C

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

Preview Lab → · Contrast checker → · Palette generator →