#21578E#21578E

#21578E is a dark, moderate cyan. Relative luminance 0.091; OKLCH L 45.0% C 0.107 H 251.8°. Best body text is #FFFFFF at 7.45:1 contrast (WCAG AA passes).

Color values

HEX	#21578E
RGB	rgb(33, 87, 142)
HSL	hsl(210, 62%, 34%)
HSV	hsv(210, 77%, 56%)
CMYK	cmyk(76.8%, 38.7%, 0%, 44.3%)
CIE-LAB	lab(36.16, 2.36, -35.52)
CIE-LCH	lch(36.16, 35.60, 273.80°)
OKLab	oklab(44.97% -0.0333 -0.1012)
OKLCH	oklch(44.97% 0.107 251.8)
XYZ	xyz(8.9160, 9.0917, 26.8709)
Luminance	0.0909 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21578E #8E5821

analogous

#218E8E #21578E #21218E

triadic

#21578E #8E2157 #578E21

tetradic

#21578E #8E218E #8E5821 #218E21

square

#21578E #8E218E #8E5821 #218E21

split-complementary

#21578E #8E2121 #8E8E21

monochromatic

#0A1A2B #15395C #21578E #2D75C0 #5294D7

Accessibility & contrast

On white

7.45

#21578E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#21578E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21578E

7.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21578E	#FFFFFF	#000000	##FFFFFF
##21578E	1.00	7.45	2.82	7.45
#FFFFFF	7.45	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D5B90

Deuteranopia (green-blind)

#2D508D

Tritanopia (blue-blind)

#00646B

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #21578e;
/* rgb */ color: rgb(33, 87, 142);
/* oklch */ color: oklch(45.0% 0.107 251.8);

Tailwind

colors: {
  custom: {
    50: '#6c86af',
    500: '#21578e',
    950: '#000000',
  },
}

SCSS

$custom: #21578e;
$custom-light: #6c86af;
$custom-dark: #000000;

JSON

{
  "hex": "#21578e",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 142
  },
  "hsl": {
    "h": 210.275,
    "s": 62.286,
    "l": 34.314
  },
  "oklch": {
    "l": 0.44972,
    "c": 0.10657,
    "h": 251.8
  },
  "luminance": 0.09093
}

Semantic roles & 50–950 ramp

primary

#21578E

secondary

#BA8650

accent

#9542E5

background

#F7F8FA

surface

#EDEFF4

border

#C8CACE

text

#080B10

muted

#7B7C7F

Preview Lab

Preview with #21578E

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

Preview Lab → · Contrast checker → · Palette generator →