#183377#183377

#183377 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.5% C 0.121 H 264.5°. Best body text is #FFFFFF at 11.81:1 contrast (WCAG AA passes).

Color values

HEX	#183377
RGB	rgb(24, 51, 119)
HSL	hsl(223, 66%, 28%)
HSV	hsv(223, 80%, 47%)
CMYK	cmyk(79.8%, 57.1%, 0%, 53.3%)
CIE-LAB	lab(23.32, 16.49, -41.87)
CIE-LCH	lch(23.32, 45.00, 291.50°)
OKLab	oklab(34.49% -0.0117 -0.1207)
OKLCH	oklch(34.49% 0.121 264.5)
XYZ	xyz(4.8891, 3.8932, 17.9430)
Luminance	0.0389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183377 #775C18

analogous

#186377 #183377 #2C1877

triadic

#183377 #771833 #337718

tetradic

#183377 #771863 #775C18 #18772C

square

#183377 #771863 #775C18 #18772C

split-complementary

#183377 #772C18 #637718

monochromatic

#050B19 #0E1D44 #183377 #2249AA #3362D6

Accessibility & contrast

On white

11.81

#183377 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#183377 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183377

11.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183377	#FFFFFF	#000000	##FFFFFF
##183377	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)

#003C79

Deuteranopia (green-blind)

#003376

Tritanopia (blue-blind)

#00444F

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #183377;
/* rgb */ color: rgb(24, 51, 119);
/* oklch */ color: oklch(34.5% 0.121 264.5);

Tailwind

colors: {
  custom: {
    50: '#656a9f',
    500: '#183377',
    950: '#000000',
  },
}

SCSS

$custom: #183377;
$custom-light: #656a9f;
$custom-dark: #000000;

JSON

{
  "hex": "#183377",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 119
  },
  "hsl": {
    "h": 222.947,
    "s": 66.434,
    "l": 28.039
  },
  "oklch": {
    "l": 0.34485,
    "c": 0.12127,
    "h": 264.5
  },
  "luminance": 0.03894
}

Semantic roles & 50–950 ramp

primary

#183377

secondary

#AC8D3F

accent

#B93EE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #183377

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

Preview Lab → · Contrast checker → · Palette generator →