#18378D#18378D

#18378D is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.3% C 0.148 H 264.8°. Best body text is #FFFFFF at 10.66:1 contrast (WCAG AA passes).

Color values

HEX	#18378D
RGB	rgb(24, 55, 141)
HSL	hsl(224, 71%, 32%)
HSV	hsv(224, 83%, 55%)
CMYK	cmyk(83%, 61%, 0%, 44.7%)
CIE-LAB	lab(26.30, 22.65, -50.81)
CIE-LCH	lch(26.30, 55.63, 294.03°)
OKLab	oklab(37.3% -0.0133 -0.1469)
OKLCH	oklch(37.3% 0.148 264.8)
XYZ	xyz(6.5489, 4.8489, 25.7849)
Luminance	0.0485 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18378D #8D6E18

analogous

#18718D #18378D #34188D

triadic

#18378D #8D1837 #378D18

tetradic

#18378D #8D1871 #8D6E18 #188D34

square

#18378D #8D1871 #8D6E18 #188D34

split-complementary

#18378D #8D3418 #718D18

monochromatic

#060E24 #0F2359 #18378D #214BC1 #416BDF

Accessibility & contrast

On white

10.66

#18378D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#18378D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18378D

10.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18378D	#FFFFFF	#000000	##FFFFFF
##18378D	1.00	10.66	1.97	10.66
#FFFFFF	10.66	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004490

Deuteranopia (green-blind)

#00398B

Tritanopia (blue-blind)

#004D5C

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #18378d;
/* rgb */ color: rgb(24, 55, 141);
/* oklch */ color: oklch(37.3% 0.148 264.8);

Tailwind

colors: {
  custom: {
    50: '#6b6daf',
    500: '#18378d',
    950: '#000000',
  },
}

SCSS

$custom: #18378d;
$custom-light: #6b6daf;
$custom-dark: #000000;

JSON

{
  "hex": "#18378d",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 141
  },
  "hsl": {
    "h": 224.103,
    "s": 70.909,
    "l": 32.353
  },
  "oklch": {
    "l": 0.37304,
    "c": 0.14751,
    "h": 264.8
  },
  "luminance": 0.0485
}

Semantic roles & 50–950 ramp

primary

#18378D

secondary

#BF9E42

accent

#BE3AEE

background

#F6F6FA

surface

#ECEBF5

border

#C7C6CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #18378D

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

Preview Lab → · Contrast checker → · Palette generator →