#183370#183370

#183370 is a dark, moderate blue. Relative luminance 0.037; OKLCH L 33.9% C 0.111 H 263.6°. Best body text is #FFFFFF at 12.02:1 contrast (WCAG AA passes).

Color values

HEX	#183370
RGB	rgb(24, 51, 112)
HSL	hsl(222, 65%, 27%)
HSV	hsv(222, 79%, 44%)
CMYK	cmyk(78.6%, 54.5%, 0%, 56.1%)
CIE-LAB	lab(22.76, 13.59, -38.29)
CIE-LCH	lch(22.76, 40.63, 289.54°)
OKLab	oklab(33.89% -0.0124 -0.1102)
OKLCH	oklch(33.89% 0.111 263.6)
XYZ	xyz(4.4841, 3.7312, 15.8100)
Luminance	0.0373 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183370 #705518

analogous

#185F70 #183370 #291870

triadic

#183370 #701833 #337018

tetradic

#183370 #70185F #705518 #187029

square

#183370 #70185F #705518 #187029

split-complementary

#183370 #702918 #5F7018

monochromatic

#050B19 #0D1C3E #183370 #234AA2 #3062D3

Accessibility & contrast

On white

12.02

#183370 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#183370 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183370

12.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183370	#FFFFFF	#000000	##FFFFFF
##183370	1.00	12.02	1.75	12.02
#FFFFFF	12.02	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A3B72

Deuteranopia (green-blind)

#00336F

Tritanopia (blue-blind)

#00424C

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #183370;
/* rgb */ color: rgb(24, 51, 112);
/* oklch */ color: oklch(33.9% 0.111 263.6);

Tailwind

colors: {
  custom: {
    50: '#636a9a',
    500: '#183370',
    950: '#000000',
  },
}

SCSS

$custom: #183370;
$custom-light: #636a9a;
$custom-dark: #000000;

JSON

{
  "hex": "#183370",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 112
  },
  "hsl": {
    "h": 221.591,
    "s": 64.706,
    "l": 26.667
  },
  "oklch": {
    "l": 0.33891,
    "c": 0.11088,
    "h": 263.6
  },
  "luminance": 0.03732
}

Semantic roles & 50–950 ramp

primary

#183370

secondary

#A5863E

accent

#B440E8

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #183370

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

Preview Lab → · Contrast checker → · Palette generator →