#18188F#18188F

#18188F is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.3% C 0.184 H 269.9°. Best body text is #FFFFFF at 13.41:1 contrast (WCAG AA passes).

Color values

HEX	#18188F
RGB	rgb(24, 24, 143)
HSL	hsl(240, 71%, 33%)
HSV	hsv(240, 83%, 56%)
CMYK	cmyk(83.2%, 83.2%, 0%, 43.9%)
CIE-LAB	lab(19.35, 42.88, -63.50)
CIE-LCH	lch(19.35, 76.62, 304.03°)
OKLab	oklab(32.34% -0.0004 -0.1838)
OKLCH	oklch(32.34% 0.184 269.9)
XYZ	xyz(5.6596, 2.8300, 26.2292)
Luminance	0.0283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18188F #8F8F18

analogous

#18538F #18188F #53188F

triadic

#18188F #8F1818 #188F18

tetradic

#18188F #8F1853 #8F8F18 #188F53

square

#18188F #8F1853 #8F8F18 #188F53

split-complementary

#18188F #8F5318 #538F18

monochromatic

#060626 #0F0F5B #18188F #2121C3 #4242DF

Accessibility & contrast

On white

13.41

#18188F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#18188F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18188F

13.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18188F	#FFFFFF	#000000	##FFFFFF
##18188F	1.00	13.41	1.57	13.41
#FFFFFF	13.41	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003592

Deuteranopia (green-blind)

#00298D

Tritanopia (blue-blind)

#003E55

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #18188f;
/* rgb */ color: rgb(24, 24, 143);
/* oklch */ color: oklch(32.3% 0.184 269.9);

Tailwind

colors: {
  custom: {
    50: '#6e58b1',
    500: '#18188f',
    950: '#000000',
  },
}

SCSS

$custom: #18188f;
$custom-light: #6e58b1;
$custom-dark: #000000;

JSON

{
  "hex": "#18188f",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 143
  },
  "hsl": {
    "h": 240,
    "s": 71.257,
    "l": 32.745
  },
  "oklch": {
    "l": 0.32339,
    "c": 0.18384,
    "h": 269.9
  },
  "luminance": 0.02831
}

Semantic roles & 50–950 ramp

primary

#18188F

secondary

#C0C043

accent

#EE3AEE

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #18188F

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

Preview Lab → · Contrast checker → · Palette generator →