#18178D#18178D

#18178D is a dark, vivid blue. Relative luminance 0.027; OKLCH L 32.0% C 0.182 H 270.1°. Best body text is #FFFFFF at 13.58:1 contrast (WCAG AA passes).

Color values

HEX	#18178D
RGB	rgb(24, 23, 141)
HSL	hsl(241, 72%, 32%)
HSV	hsv(241, 84%, 55%)
CMYK	cmyk(83%, 83.7%, 0%, 44.7%)
CIE-LAB	lab(18.93, 42.73, -62.95)
CIE-LCH	lch(18.93, 76.08, 304.16°)
OKLab	oklab(31.97% 0.0002 -0.1822)
OKLCH	oklch(31.97% 0.182 270.1)
XYZ	xyz(5.4892, 2.7294, 25.4317)
Luminance	0.0273 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18178D #8C8D17

analogous

#17518D #18178D #53178D

triadic

#18178D #8D1817 #178D18

tetradic

#18178D #8D1751 #8C8D17 #178D53

square

#18178D #8D1751 #8C8D17 #178D53

split-complementary

#18178D #8D5317 #518D17

monochromatic

#060624 #0F0E58 #18178D #2120C2 #403FE0

Accessibility & contrast

On white

13.58

#18178D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#18178D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18178D

13.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18178D	#FFFFFF	#000000	##FFFFFF
##18178D	1.00	13.58	1.55	13.58
#FFFFFF	13.58	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.58	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: #18178d;
/* rgb */ color: rgb(24, 23, 141);
/* oklch */ color: oklch(32.0% 0.182 270.1);

Tailwind

colors: {
  custom: {
    50: '#6e58b0',
    500: '#18178d',
    950: '#000000',
  },
}

SCSS

$custom: #18178d;
$custom-light: #6e58b0;
$custom-dark: #000000;

JSON

{
  "hex": "#18178d",
  "rgb": {
    "r": 24,
    "g": 23,
    "b": 141
  },
  "hsl": {
    "h": 240.508,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.31972,
    "c": 0.18225,
    "h": 270.1
  },
  "luminance": 0.0273
}

Semantic roles & 50–950 ramp

primary

#18178D

secondary

#BFC040

accent

#EF39ED

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #18178D

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

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