#183C69#183C69

#183C69 is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.5% C 0.089 H 255.5°. Best body text is #FFFFFF at 11.12:1 contrast (WCAG AA passes).

Color values

HEX	#183C69
RGB	rgb(24, 60, 105)
HSL	hsl(213, 63%, 25%)
HSV	hsv(213, 77%, 41%)
CMYK	cmyk(77.1%, 42.9%, 0%, 58.8%)
CIE-LAB	lab(25.09, 4.31, -30.05)
CIE-LCH	lch(25.09, 30.36, 278.17°)
OKLab	oklab(35.53% -0.0222 -0.0858)
OKLCH	oklch(35.53% 0.089 255.5)
XYZ	xyz(4.5414, 4.4453, 13.9806)
Luminance	0.0445 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C69 #694518

analogous

#186569 #183C69 #1C1869

triadic

#183C69 #69183C #3C6918

tetradic

#183C69 #691865 #694518 #18691C

square

#183C69 #691865 #694518 #18691C

split-complementary

#183C69 #691C18 #656918

monochromatic

#060E19 #0D2037 #183C69 #23589B #2F75CD

Accessibility & contrast

On white

11.12

#183C69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#183C69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C69

11.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C69	#FFFFFF	#000000	##FFFFFF
##183C69	1.00	11.12	1.89	11.12
#FFFFFF	11.12	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#27406B

Deuteranopia (green-blind)

#1A3868

Tritanopia (blue-blind)

#00474D

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #183c69;
/* rgb */ color: rgb(24, 60, 105);
/* oklch */ color: oklch(35.5% 0.089 255.5);

Tailwind

colors: {
  custom: {
    50: '#617194',
    500: '#183c69',
    950: '#000000',
  },
}

SCSS

$custom: #183c69;
$custom-light: #617194;
$custom-dark: #000000;

JSON

{
  "hex": "#183c69",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 105
  },
  "hsl": {
    "h": 213.333,
    "s": 62.791,
    "l": 25.294
  },
  "oklch": {
    "l": 0.35526,
    "c": 0.08862,
    "h": 255.5
  },
  "luminance": 0.04446
}

Semantic roles & 50–950 ramp

primary

#183C69

secondary

#9F743E

accent

#9D42E6

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05070D

muted

#7A7A7E

Preview Lab

Preview with #183C69

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

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