#18188C#18188C

#18188C is a dark, vivid blue. Relative luminance 0.027; OKLCH L 32.0% C 0.180 H 270.1°. Best body text is #FFFFFF at 13.56:1 contrast (WCAG AA passes).

Color values

HEX	#18188C
RGB	rgb(24, 24, 140)
HSL	hsl(240, 71%, 32%)
HSV	hsv(240, 83%, 55%)
CMYK	cmyk(82.9%, 82.9%, 0%, 45.1%)
CIE-LAB	lab(18.97, 41.89, -62.25)
CIE-LCH	lch(18.97, 75.03, 303.94°)
OKLab	oklab(31.97% 0.0002 -0.1802)
OKLCH	oklch(31.97% 0.18 270.1)
XYZ	xyz(5.4353, 2.7403, 25.0483)
Luminance	0.0274 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18188C #8C8C18

analogous

#18528C #18188C #52188C

triadic

#18188C #8C1818 #188C18

tetradic

#18188C #8C1852 #8C8C18 #188C52

square

#18188C #8C1852 #8C8C18 #188C52

split-complementary

#18188C #8C5218 #528C18

monochromatic

#060624 #0F0F58 #18188C #2121C0 #4040DE

Accessibility & contrast

On white

13.56

#18188C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#18188C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18188C

13.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18188C	#FFFFFF	#000000	##FFFFFF
##18188C	1.00	13.56	1.55	13.56
#FFFFFF	13.56	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348F

Deuteranopia (green-blind)

#00288A

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #18188c;
/* rgb */ color: rgb(24, 24, 140);
/* oklch */ color: oklch(32.0% 0.180 270.1);

Tailwind

colors: {
  custom: {
    50: '#6d58af',
    500: '#18188c',
    950: '#000000',
  },
}

SCSS

$custom: #18188c;
$custom-light: #6d58af;
$custom-dark: #000000;

JSON

{
  "hex": "#18188c",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 140
  },
  "hsl": {
    "h": 240,
    "s": 70.732,
    "l": 32.157
  },
  "oklch": {
    "l": 0.31968,
    "c": 0.18024,
    "h": 270.1
  },
  "luminance": 0.02741
}

Semantic roles & 50–950 ramp

primary

#18188C

secondary

#BFBF41

accent

#ED3AED

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090311

muted

#7B7880

Preview Lab

Preview with #18188C

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

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