#18178E#18178E

#18178E is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.1% C 0.183 H 270.0°. Best body text is #FFFFFF at 13.53:1 contrast (WCAG AA passes).

Color values

HEX	#18178E
RGB	rgb(24, 23, 142)
HSL	hsl(241, 72%, 32%)
HSV	hsv(241, 84%, 56%)
CMYK	cmyk(83.1%, 83.8%, 0%, 44.3%)
CIE-LAB	lab(19.05, 43.05, -63.37)
CIE-LCH	lch(19.05, 76.61, 304.19°)
OKLab	oklab(32.1% 0 -0.1834)
OKLCH	oklch(32.1% 0.183 270)
XYZ	xyz(5.5639, 2.7593, 25.8253)
Luminance	0.0276 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18178E #8D8E17

analogous

#17528E #18178E #53178E

triadic

#18178E #8E1817 #178E18

tetradic

#18178E #8E1752 #8D8E17 #178E53

square

#18178E #8E1752 #8D8E17 #178E53

split-complementary

#18178E #8E5317 #528E17

monochromatic

#060625 #0F0E59 #18178E #2120C3 #413FE0

Accessibility & contrast

On white

13.53

#18178E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#18178E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18178E

13.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18178E	#FFFFFF	#000000	##FFFFFF
##18178E	1.00	13.53	1.55	13.53
#FFFFFF	13.53	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003491

Deuteranopia (green-blind)

#00288C

Tritanopia (blue-blind)

#003D54

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #18178e;
/* rgb */ color: rgb(24, 23, 142);
/* oklch */ color: oklch(32.1% 0.183 270.0);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#18178e",
  "rgb": {
    "r": 24,
    "g": 23,
    "b": 142
  },
  "hsl": {
    "h": 240.504,
    "s": 72.121,
    "l": 32.353
  },
  "oklch": {
    "l": 0.32096,
    "c": 0.18344,
    "h": 270
  },
  "luminance": 0.0276
}

Semantic roles & 50–950 ramp

primary

#18178E

secondary

#BFC040

accent

#EF39ED

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #18178E

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

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