#18178A#18178A

#18178A is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.6% C 0.179 H 270.3°. Best body text is #FFFFFF at 13.74:1 contrast (WCAG AA passes).

Color values

HEX	#18178A
RGB	rgb(24, 23, 138)
HSL	hsl(241, 71%, 32%)
HSV	hsv(241, 83%, 54%)
CMYK	cmyk(82.6%, 83.3%, 0%, 45.9%)
CIE-LAB	lab(18.55, 41.74, -61.70)
CIE-LCH	lch(18.55, 74.50, 304.08°)
OKLab	oklab(31.6% 0.0009 -0.1786)
OKLCH	oklch(31.6% 0.179 270.3)
XYZ	xyz(5.2690, 2.6414, 24.2720)
Luminance	0.0264 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18178A #898A17

analogous

#17508A #18178A #52178A

triadic

#18178A #8A1817 #178A18

tetradic

#18178A #8A1750 #898A17 #178A52

square

#18178A #8A1750 #898A17 #178A52

split-complementary

#18178A #8A5217 #508A17

monochromatic

#060621 #0F0E56 #18178A #2120BE #3E3DDF

Accessibility & contrast

On white

13.74

#18178A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#18178A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18178A

13.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18178A	#FFFFFF	#000000	##FFFFFF
##18178A	1.00	13.74	1.53	13.74
#FFFFFF	13.74	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338D

Deuteranopia (green-blind)

#002788

Tritanopia (blue-blind)

#003C51

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #18178a;
/* rgb */ color: rgb(24, 23, 138);
/* oklch */ color: oklch(31.6% 0.179 270.3);

Tailwind

colors: {
  custom: {
    50: '#6d57ad',
    500: '#18178a',
    950: '#000000',
  },
}

SCSS

$custom: #18178a;
$custom-light: #6d57ad;
$custom-dark: #000000;

JSON

{
  "hex": "#18178a",
  "rgb": {
    "r": 24,
    "g": 23,
    "b": 138
  },
  "hsl": {
    "h": 240.522,
    "s": 71.429,
    "l": 31.569
  },
  "oklch": {
    "l": 0.31599,
    "c": 0.17864,
    "h": 270.3
  },
  "luminance": 0.02642
}

Semantic roles & 50–950 ramp

primary

#18178A

secondary

#BDBE3F

accent

#EE3AED

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #18178A

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

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