#18378A#18378A

#18378A is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.0% C 0.143 H 264.6°. Best body text is #FFFFFF at 10.76:1 contrast (WCAG AA passes).

Color values

HEX	#18378A
RGB	rgb(24, 55, 138)
HSL	hsl(224, 70%, 32%)
HSV	hsv(224, 83%, 54%)
CMYK	cmyk(82.6%, 60.1%, 0%, 45.9%)
CIE-LAB	lab(26.04, 21.44, -49.37)
CIE-LCH	lch(26.04, 53.82, 293.48°)
OKLab	oklab(37.03% -0.0134 -0.1427)
OKLCH	oklch(37.03% 0.143 264.6)
XYZ	xyz(6.3287, 4.7608, 24.6252)
Luminance	0.0476 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18378A #8A6B18

analogous

#18708A #18378A #32188A

triadic

#18378A #8A1837 #378A18

tetradic

#18378A #8A1870 #8A6B18 #188A32

square

#18378A #8A1870 #8A6B18 #188A32

split-complementary

#18378A #8A3218 #708A18

monochromatic

#060D22 #0F2256 #18378A #214CBE #3F6ADE

Accessibility & contrast

On white

10.76

#18378A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#18378A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18378A

10.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18378A	#FFFFFF	#000000	##FFFFFF
##18378A	1.00	10.76	1.95	10.76
#FFFFFF	10.76	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438D

Deuteranopia (green-blind)

#003988

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #18378a;
/* rgb */ color: rgb(24, 55, 138);
/* oklch */ color: oklch(37.0% 0.143 264.6);

Tailwind

colors: {
  custom: {
    50: '#6a6dad',
    500: '#18378a',
    950: '#000000',
  },
}

SCSS

$custom: #18378a;
$custom-light: #6a6dad;
$custom-dark: #000000;

JSON

{
  "hex": "#18378a",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 138
  },
  "hsl": {
    "h": 223.684,
    "s": 70.37,
    "l": 31.765
  },
  "oklch": {
    "l": 0.37031,
    "c": 0.14331,
    "h": 264.6
  },
  "luminance": 0.04762
}

Semantic roles & 50–950 ramp

primary

#18378A

secondary

#BD9B40

accent

#BD3BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #18378A

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

Preview Lab → · Contrast checker → · Palette generator →