#183789#183789

#183789 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.9% C 0.142 H 264.6°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#183789
RGB	rgb(24, 55, 137)
HSL	hsl(224, 70%, 32%)
HSV	hsv(224, 82%, 54%)
CMYK	cmyk(82.5%, 59.9%, 0%, 46.3%)
CIE-LAB	lab(25.96, 21.03, -48.88)
CIE-LCH	lch(25.96, 53.22, 293.28°)
OKLab	oklab(36.94% -0.0134 -0.1413)
OKLCH	oklch(36.94% 0.142 264.6)
XYZ	xyz(6.2566, 4.7320, 24.2457)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183789 #896A18

analogous

#187089 #183789 #321889

triadic

#183789 #891837 #378918

tetradic

#183789 #891870 #896A18 #188932

square

#183789 #891870 #896A18 #188932

split-complementary

#183789 #893218 #708918

monochromatic

#060D21 #0F2255 #183789 #214CBD #3E6ADD

Accessibility & contrast

On white

10.79

#183789 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#183789 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183789

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183789	#FFFFFF	#000000	##FFFFFF
##183789	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438C

Deuteranopia (green-blind)

#003887

Tritanopia (blue-blind)

#004C5A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #183789;
/* rgb */ color: rgb(24, 55, 137);
/* oklch */ color: oklch(36.9% 0.142 264.6);

Tailwind

colors: {
  custom: {
    50: '#6a6dac',
    500: '#183789',
    950: '#000000',
  },
}

SCSS

$custom: #183789;
$custom-light: #6a6dac;
$custom-dark: #000000;

JSON

{
  "hex": "#183789",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 137
  },
  "hsl": {
    "h": 223.54,
    "s": 70.186,
    "l": 31.569
  },
  "oklch": {
    "l": 0.36941,
    "c": 0.1419,
    "h": 264.6
  },
  "luminance": 0.04733
}

Semantic roles & 50–950 ramp

primary

#183789

secondary

#BD9A40

accent

#BC3BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #183789

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

Preview Lab → · Contrast checker → · Palette generator →