#183D56#183D56

#183D56 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.6% C 0.061 H 241.2°. Best body text is #FFFFFF at 11.41:1 contrast (WCAG AA passes).

Color values

HEX	#183D56
RGB	rgb(24, 61, 86)
HSL	hsl(204, 56%, 22%)
HSV	hsv(204, 72%, 34%)
CMYK	cmyk(72.1%, 29.1%, 0%, 66.3%)
CIE-LAB	lab(24.33, -4.02, -18.91)
CIE-LCH	lch(24.33, 19.33, 258.01°)
OKLab	oklab(34.57% -0.0293 -0.0533)
OKLCH	oklch(34.57% 0.061 241.2)
XYZ	xyz(3.7245, 4.2032, 9.4173)
Luminance	0.0420 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D56 #563118

analogous

#185650 #183D56 #181E56

triadic

#183D56 #56183D #3D5618

tetradic

#183D56 #501856 #563118 #1E5618

square

#183D56 #501856 #563118 #1E5618

split-complementary

#183D56 #56181E #565018

monochromatic

#071118 #0B1B26 #183D56 #255F86 #3381B6

Accessibility & contrast

On white

11.41

#183D56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#183D56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D56

11.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D56	#FFFFFF	#000000	##FFFFFF
##183D56	1.00	11.41	1.84	11.41
#FFFFFF	11.41	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#323D57

Deuteranopia (green-blind)

#293756

Tritanopia (blue-blind)

#004346

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #183d56;
/* rgb */ color: rgb(24, 61, 86);
/* oklch */ color: oklch(34.6% 0.061 241.2);

Tailwind

colors: {
  custom: {
    50: '#5d7285',
    500: '#183d56',
    950: '#000000',
  },
}

SCSS

$custom: #183d56;
$custom-light: #5d7285;
$custom-dark: #000000;

JSON

{
  "hex": "#183d56",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 86
  },
  "hsl": {
    "h": 204.194,
    "s": 56.364,
    "l": 21.569
  },
  "oklch": {
    "l": 0.34572,
    "c": 0.06078,
    "h": 241.2
  },
  "luminance": 0.04204
}

Semantic roles & 50–950 ramp

primary

#183D56

secondary

#8D5D3D

accent

#8548E0

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#05070B

muted

#797A7C

Preview Lab

Preview with #183D56

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

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