#183C82#183C82

#183C82 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.4% C 0.125 H 261.9°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#183C82
RGB	rgb(24, 60, 130)
HSL	hsl(220, 69%, 30%)
HSV	hsv(220, 82%, 51%)
CMYK	cmyk(81.5%, 53.8%, 0%, 49%)
CIE-LAB	lab(26.84, 14.66, -43.09)
CIE-LCH	lch(26.84, 45.51, 288.79°)
OKLab	oklab(37.43% -0.0177 -0.1241)
OKLCH	oklch(37.43% 0.125 261.9)
XYZ	xyz(6.0204, 5.0369, 21.7697)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C82 #825E18

analogous

#187182 #183C82 #291882

triadic

#183C82 #82183C #3C8218

tetradic

#183C82 #821871 #825E18 #188229

square

#183C82 #821871 #825E18 #188229

split-complementary

#183C82 #822918 #718218

monochromatic

#050C1B #0E244E #183C82 #2254B6 #3A70DB

Accessibility & contrast

On white

10.46

#183C82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#183C82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C82

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C82	#FFFFFF	#000000	##FFFFFF
##183C82	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B4584

Deuteranopia (green-blind)

#003B81

Tritanopia (blue-blind)

#004D59

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #183c82;
/* rgb */ color: rgb(24, 60, 130);
/* oklch */ color: oklch(37.4% 0.125 261.9);

Tailwind

colors: {
  custom: {
    50: '#6771a7',
    500: '#183c82',
    950: '#000000',
  },
}

SCSS

$custom: #183c82;
$custom-light: #6771a7;
$custom-dark: #000000;

JSON

{
  "hex": "#183c82",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 130
  },
  "hsl": {
    "h": 219.623,
    "s": 68.831,
    "l": 30.196
  },
  "oklch": {
    "l": 0.37431,
    "c": 0.12538,
    "h": 261.9
  },
  "luminance": 0.05038
}

Semantic roles & 50–950 ramp

primary

#183C82

secondary

#B68E40

accent

#B03CEC

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #183C82

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

Preview Lab → · Contrast checker → · Palette generator →