#18188D#18188D

#18188D is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.1% C 0.181 H 270.0°. Best body text is #FFFFFF at 13.51:1 contrast (WCAG AA passes).

Color values

HEX	#18188D
RGB	rgb(24, 24, 141)
HSL	hsl(240, 71%, 32%)
HSV	hsv(240, 83%, 55%)
CMYK	cmyk(83%, 83%, 0%, 44.7%)
CIE-LAB	lab(19.10, 42.22, -62.67)
CIE-LCH	lch(19.10, 75.56, 303.97°)
OKLab	oklab(32.09% 0 -0.1814)
OKLCH	oklch(32.09% 0.181 270)
XYZ	xyz(5.5094, 2.7699, 25.4384)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18188D #8D8D18

analogous

#18538D #18188D #53188D

triadic

#18188D #8D1818 #188D18

tetradic

#18188D #8D1853 #8D8D18 #188D53

square

#18188D #8D1853 #8D8D18 #188D53

split-complementary

#18188D #8D5318 #538D18

monochromatic

#060624 #0F0F59 #18188D #2121C1 #4141DF

Accessibility & contrast

On white

13.51

#18188D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#18188D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18188D

13.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18188D	#FFFFFF	#000000	##FFFFFF
##18188D	1.00	13.51	1.55	13.51
#FFFFFF	13.51	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003490

Deuteranopia (green-blind)

#00288B

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #18188d;
/* rgb */ color: rgb(24, 24, 141);
/* oklch */ color: oklch(32.1% 0.181 270.0);

Tailwind

colors: {
  custom: {
    50: '#6e58b0',
    500: '#18188d',
    950: '#000000',
  },
}

SCSS

$custom: #18188d;
$custom-light: #6e58b0;
$custom-dark: #000000;

JSON

{
  "hex": "#18188d",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 141
  },
  "hsl": {
    "h": 240,
    "s": 70.909,
    "l": 32.353
  },
  "oklch": {
    "l": 0.32091,
    "c": 0.18144,
    "h": 270
  },
  "luminance": 0.02771
}

Semantic roles & 50–950 ramp

primary

#18188D

secondary

#BFBF42

accent

#EE3AEE

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #18188D

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

Preview Lab → · Contrast checker → · Palette generator →