#183F52#183F52

#183F52 is a dark, muted cyan. Relative luminance 0.044; OKLCH L 34.9% C 0.055 H 232.6°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#183F52
RGB	rgb(24, 63, 82)
HSL	hsl(200, 55%, 21%)
HSV	hsv(200, 71%, 32%)
CMYK	cmyk(70.7%, 23.2%, 0%, 67.8%)
CIE-LAB	lab(24.82, -6.86, -15.52)
CIE-LCH	lch(24.82, 16.97, 246.17°)
OKLab	oklab(34.9% -0.0333 -0.0435)
OKLCH	oklch(34.9% 0.055 232.6)
XYZ	xyz(3.6766, 4.3580, 8.6284)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183F52 #522B18

analogous

#185248 #183F52 #182252

triadic

#183F52 #52183F #3F5218

tetradic

#183F52 #481852 #522B18 #225218

square

#183F52 #481852 #522B18 #225218

split-complementary

#183F52 #521822 #524818

monochromatic

#071218 #0A1B23 #183F52 #266381 #3488B1

Accessibility & contrast

On white

11.22

#183F52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#183F52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183F52

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183F52	#FFFFFF	#000000	##FFFFFF
##183F52	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363E53

Deuteranopia (green-blind)

#2E3852

Tritanopia (blue-blind)

#004445

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #183f52;
/* rgb */ color: rgb(24, 63, 82);
/* oklch */ color: oklch(34.9% 0.055 232.6);

Tailwind

colors: {
  custom: {
    50: '#5c7482',
    500: '#183f52',
    950: '#000000',
  },
}

SCSS

$custom: #183f52;
$custom-light: #5c7482;
$custom-dark: #000000;

JSON

{
  "hex": "#183f52",
  "rgb": {
    "r": 24,
    "g": 63,
    "b": 82
  },
  "hsl": {
    "h": 199.655,
    "s": 54.717,
    "l": 20.784
  },
  "oklch": {
    "l": 0.34896,
    "c": 0.05477,
    "h": 232.6
  },
  "luminance": 0.04358
}

Semantic roles & 50–950 ramp

primary

#183F52

secondary

#89563D

accent

#7A4ADE

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #183F52

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

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