#183C66#183C66

#183C66 is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.3% C 0.084 H 254.1°. Best body text is #FFFFFF at 11.19:1 contrast (WCAG AA passes).

Color values

HEX	#183C66
RGB	rgb(24, 60, 102)
HSL	hsl(212, 62%, 25%)
HSV	hsv(212, 76%, 40%)
CMYK	cmyk(76.5%, 41.2%, 0%, 60%)
CIE-LAB	lab(24.90, 3.08, -28.42)
CIE-LCH	lch(24.90, 28.58, 276.19°)
OKLab	oklab(35.32% -0.023 -0.081)
OKLCH	oklch(35.32% 0.084 254.1)
XYZ	xyz(4.3899, 4.3847, 13.1828)
Luminance	0.0439 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C66 #664218

analogous

#186366 #183C66 #1B1866

triadic

#183C66 #66183C #3C6618

tetradic

#183C66 #661863 #664218 #18661B

square

#183C66 #661863 #664218 #18661B

split-complementary

#183C66 #661B18 #636618

monochromatic

#060F19 #0C1F34 #183C66 #245998 #2F76C9

Accessibility & contrast

On white

11.19

#183C66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#183C66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C66

11.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C66	#FFFFFF	#000000	##FFFFFF
##183C66	1.00	11.19	1.88	11.19
#FFFFFF	11.19	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#293F68

Deuteranopia (green-blind)

#1D3865

Tritanopia (blue-blind)

#00464C

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #183c66;
/* rgb */ color: rgb(24, 60, 102);
/* oklch */ color: oklch(35.3% 0.084 254.1);

Tailwind

colors: {
  custom: {
    50: '#607192',
    500: '#183c66',
    950: '#000000',
  },
}

SCSS

$custom: #183c66;
$custom-light: #607192;
$custom-dark: #000000;

JSON

{
  "hex": "#183c66",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 102
  },
  "hsl": {
    "h": 212.308,
    "s": 61.905,
    "l": 24.706
  },
  "oklch": {
    "l": 0.35319,
    "c": 0.08419,
    "h": 254.1
  },
  "luminance": 0.04385
}

Semantic roles & 50–950 ramp

primary

#183C66

secondary

#9C713E

accent

#9A43E5

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05070D

muted

#7A7A7E

Preview Lab

Preview with #183C66

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

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