#183081#183081

#183081 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.7% C 0.140 H 266.3°. Best body text is #FFFFFF at 11.81:1 contrast (WCAG AA passes).

Color values

HEX	#183081
RGB	rgb(24, 48, 129)
HSL	hsl(226, 69%, 30%)
HSV	hsv(226, 81%, 51%)
CMYK	cmyk(81.4%, 62.8%, 0%, 49.4%)
CIE-LAB	lab(23.31, 22.70, -48.20)
CIE-LCH	lch(23.31, 53.27, 295.22°)
OKLab	oklab(34.75% -0.009 -0.1394)
OKLCH	oklch(34.75% 0.14 266.3)
XYZ	xyz(5.3947, 3.8925, 21.2316)
Luminance	0.0389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183081 #816918

analogous

#186481 #183081 #351881

triadic

#183081 #811830 #308118

tetradic

#183081 #811864 #816918 #188135

square

#183081 #811864 #816918 #188135

split-complementary

#183081 #813518 #648118

monochromatic

#050A1A #0E1D4D #183081 #2243B5 #395EDA

Accessibility & contrast

On white

11.81

#183081 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#183081 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183081

11.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183081	#FFFFFF	#000000	##FFFFFF
##183081	1.00	11.81	1.78	11.81
#FFFFFF	11.81	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D84

Deuteranopia (green-blind)

#00337F

Tritanopia (blue-blind)

#004553

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #183081;
/* rgb */ color: rgb(24, 48, 129);
/* oklch */ color: oklch(34.7% 0.140 266.3);

Tailwind

colors: {
  custom: {
    50: '#6868a6',
    500: '#183081',
    950: '#000000',
  },
}

SCSS

$custom: #183081;
$custom-light: #6868a6;
$custom-dark: #000000;

JSON

{
  "hex": "#183081",
  "rgb": {
    "r": 24,
    "g": 48,
    "b": 129
  },
  "hsl": {
    "h": 226.286,
    "s": 68.627,
    "l": 30
  },
  "oklch": {
    "l": 0.34749,
    "c": 0.13965,
    "h": 266.3
  },
  "luminance": 0.03893
}

Semantic roles & 50–950 ramp

primary

#183081

secondary

#B59A40

accent

#C33CEB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #183081

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

Preview Lab → · Contrast checker → · Palette generator →