#183D52#183D52

#183D52 is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.3% C 0.056 H 236.5°. Best body text is #FFFFFF at 11.49:1 contrast (WCAG AA passes).

Color values

HEX	#183D52
RGB	rgb(24, 61, 82)
HSL	hsl(202, 55%, 21%)
HSV	hsv(202, 71%, 32%)
CMYK	cmyk(70.7%, 25.6%, 0%, 67.8%)
CIE-LAB	lab(24.13, -5.56, -16.59)
CIE-LCH	lch(24.13, 17.50, 251.47°)
OKLab	oklab(34.35% -0.0308 -0.0466)
OKLCH	oklch(34.35% 0.056 236.5)
XYZ	xyz(3.5678, 4.1405, 8.5922)
Luminance	0.0414 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D52 #522D18

analogous

#18524A #183D52 #182052

triadic

#183D52 #52183D #3D5218

tetradic

#183D52 #4A1852 #522D18 #205218

square

#183D52 #4A1852 #522D18 #205218

split-complementary

#183D52 #521820 #524A18

monochromatic

#071218 #0A1A23 #183D52 #266081 #3483B1

Accessibility & contrast

On white

11.49

#183D52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#183D52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D52

11.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D52	#FFFFFF	#000000	##FFFFFF
##183D52	1.00	11.49	1.83	11.49
#FFFFFF	11.49	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333D53

Deuteranopia (green-blind)

#2B3752

Tritanopia (blue-blind)

#004244

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183d52;
/* rgb */ color: rgb(24, 61, 82);
/* oklch */ color: oklch(34.3% 0.056 236.5);

Tailwind

colors: {
  custom: {
    50: '#5c7282',
    500: '#183d52',
    950: '#000000',
  },
}

SCSS

$custom: #183d52;
$custom-light: #5c7282;
$custom-dark: #000000;

JSON

{
  "hex": "#183d52",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 82
  },
  "hsl": {
    "h": 201.724,
    "s": 54.717,
    "l": 20.784
  },
  "oklch": {
    "l": 0.34346,
    "c": 0.05586,
    "h": 236.5
  },
  "luminance": 0.04141
}

Semantic roles & 50–950 ramp

primary

#183D52

secondary

#89583D

accent

#7F4ADE

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #183D52

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

Preview Lab → · Contrast checker → · Palette generator →