#183670#183670

#183670 is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.6% C 0.107 H 261.9°. Best body text is #FFFFFF at 11.66:1 contrast (WCAG AA passes).

Color values

HEX	#183670
RGB	rgb(24, 54, 112)
HSL	hsl(220, 65%, 27%)
HSV	hsv(220, 79%, 44%)
CMYK	cmyk(78.6%, 51.8%, 0%, 56.1%)
CIE-LAB	lab(23.68, 11.44, -36.81)
CIE-LCH	lch(23.68, 38.55, 287.27°)
OKLab	oklab(34.59% -0.015 -0.1058)
OKLCH	oklch(34.59% 0.107 261.9)
XYZ	xyz(4.6194, 4.0019, 15.8551)
Luminance	0.0400 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183670 #705218

analogous

#186270 #183670 #261870

triadic

#183670 #701836 #367018

tetradic

#183670 #701862 #705218 #187026

square

#183670 #701862 #705218 #187026

split-complementary

#183670 #702618 #627018

monochromatic

#050C19 #0D1E3E #183670 #234EA2 #3067D3

Accessibility & contrast

On white

11.66

#183670 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#183670 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183670

11.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183670	#FFFFFF	#000000	##FFFFFF
##183670	1.00	11.66	1.80	11.66
#FFFFFF	11.66	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#143D72

Deuteranopia (green-blind)

#00356F

Tritanopia (blue-blind)

#00444D

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #183670;
/* rgb */ color: rgb(24, 54, 112);
/* oklch */ color: oklch(34.6% 0.107 261.9);

Tailwind

colors: {
  custom: {
    50: '#636c99',
    500: '#183670',
    950: '#000000',
  },
}

SCSS

$custom: #183670;
$custom-light: #636c99;
$custom-dark: #000000;

JSON

{
  "hex": "#183670",
  "rgb": {
    "r": 24,
    "g": 54,
    "b": 112
  },
  "hsl": {
    "h": 219.545,
    "s": 64.706,
    "l": 26.667
  },
  "oklch": {
    "l": 0.34589,
    "c": 0.10684,
    "h": 261.9
  },
  "luminance": 0.04002
}

Semantic roles & 50–950 ramp

primary

#183670

secondary

#A5823E

accent

#AF40E8

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #183670

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

Preview Lab → · Contrast checker → · Palette generator →