#181C68#181C68

#181C68 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.4% C 0.130 H 272.3°. Best body text is #FFFFFF at 14.95:1 contrast (WCAG AA passes).

Color values

HEX	#181C68
RGB	rgb(24, 28, 104)
HSL	hsl(237, 63%, 25%)
HSV	hsv(237, 77%, 41%)
CMYK	cmyk(76.9%, 73.1%, 0%, 59.2%)
CIE-LAB	lab(15.61, 26.69, -44.76)
CIE-LCH	lch(15.61, 52.11, 300.81°)
OKLab	oklab(28.36% 0.0053 -0.1295)
OKLCH	oklch(28.36% 0.13 272.3)
XYZ	xyz(3.2898, 2.0238, 13.3113)
Luminance	0.0202 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C68 #686418

analogous

#184468 #181C68 #3C1868

triadic

#181C68 #68181C #1C6818

tetradic

#181C68 #681844 #686418 #18683C

square

#181C68 #681844 #686418 #18683C

split-complementary

#181C68 #683C18 #446818

monochromatic

#060719 #0D0F36 #181C68 #23299A #2F37CB

Accessibility & contrast

On white

14.95

#181C68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#181C68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C68

14.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C68	#FFFFFF	#000000	##FFFFFF
##181C68	1.00	14.95	1.40	14.95
#FFFFFF	14.95	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	14.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B6A

Deuteranopia (green-blind)

#002367

Tritanopia (blue-blind)

#00313F

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #181c68;
/* rgb */ color: rgb(24, 28, 104);
/* oklch */ color: oklch(28.4% 0.130 272.3);

Tailwind

colors: {
  custom: {
    50: '#635894',
    500: '#181c68',
    950: '#000000',
  },
}

SCSS

$custom: #181c68;
$custom-light: #635894;
$custom-dark: #000000;

JSON

{
  "hex": "#181c68",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 104
  },
  "hsl": {
    "h": 237,
    "s": 62.5,
    "l": 25.098
  },
  "oklch": {
    "l": 0.28355,
    "c": 0.12957,
    "h": 272.3
  },
  "luminance": 0.02024
}

Semantic roles & 50–950 ramp

primary

#181C68

secondary

#9E993E

accent

#DD42E6

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06030D

muted

#7A787E

Preview Lab

Preview with #181C68

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

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