#183C56#183C56

#183C56 is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.3% C 0.062 H 242.9°. Best body text is #FFFFFF at 11.54:1 contrast (WCAG AA passes).

Color values

HEX	#183C56
RGB	rgb(24, 60, 86)
HSL	hsl(205, 56%, 22%)
HSV	hsv(205, 72%, 34%)
CMYK	cmyk(72.1%, 30.2%, 0%, 66.3%)
CIE-LAB	lab(23.99, -3.35, -19.44)
CIE-LCH	lch(23.99, 19.73, 260.22°)
OKLab	oklab(34.3% -0.0281 -0.0548)
OKLCH	oklch(34.3% 0.062 242.9)
XYZ	xyz(3.6716, 4.0974, 9.3997)
Luminance	0.0410 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C56 #563218

analogous

#185651 #183C56 #181D56

triadic

#183C56 #56183C #3C5618

tetradic

#183C56 #511856 #563218 #1D5618

square

#183C56 #511856 #563218 #1D5618

split-complementary

#183C56 #56181D #565118

monochromatic

#071118 #0B1B26 #183C56 #255D86 #337FB6

Accessibility & contrast

On white

11.54

#183C56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#183C56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C56

11.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C56	#FFFFFF	#000000	##FFFFFF
##183C56	1.00	11.54	1.82	11.54
#FFFFFF	11.54	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303C57

Deuteranopia (green-blind)

#283656

Tritanopia (blue-blind)

#004245

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183c56;
/* rgb */ color: rgb(24, 60, 86);
/* oklch */ color: oklch(34.3% 0.062 242.9);

Tailwind

colors: {
  custom: {
    50: '#5d7185',
    500: '#183c56',
    950: '#000000',
  },
}

SCSS

$custom: #183c56;
$custom-light: #5d7185;
$custom-dark: #000000;

JSON

{
  "hex": "#183c56",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 86
  },
  "hsl": {
    "h": 205.161,
    "s": 56.364,
    "l": 21.569
  },
  "oklch": {
    "l": 0.34303,
    "c": 0.06159,
    "h": 242.9
  },
  "luminance": 0.04098
}

Semantic roles & 50–950 ramp

primary

#183C56

secondary

#8D5E3D

accent

#8848E0

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#05070B

muted

#797A7C

Preview Lab

Preview with #183C56

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

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