#181579#181579

#181579 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.3% C 0.159 H 271.9°. Best body text is #FFFFFF at 14.77:1 contrast (WCAG AA passes).

Color values

HEX	#181579
RGB	rgb(24, 21, 121)
HSL	hsl(242, 70%, 28%)
HSV	hsv(242, 83%, 47%)
CMYK	cmyk(80.2%, 82.6%, 0%, 52.5%)
CIE-LAB	lab(16.06, 37.11, -55.06)
CIE-LCH	lch(16.06, 66.39, 303.98°)
OKLab	oklab(29.25% 0.0054 -0.1593)
OKLCH	oklch(29.25% 0.159 271.9)
XYZ	xyz(4.0949, 2.1105, 18.2770)
Luminance	0.0211 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181579 #767915

analogous

#154479 #181579 #4A1579

triadic

#181579 #791815 #157918

tetradic

#181579 #791544 #767915 #15794A

square

#181579 #791544 #767915 #15794A

split-complementary

#181579 #794A15 #447915

monochromatic

#05051A #0E0C45 #181579 #221EAD #332EDB

Accessibility & contrast

On white

14.77

#181579 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#181579 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181579

14.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181579	#FFFFFF	#000000	##FFFFFF
##181579	1.00	14.77	1.42	14.77
#FFFFFF	14.77	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7C

Deuteranopia (green-blind)

#002377

Tritanopia (blue-blind)

#003447

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #181579;
/* rgb */ color: rgb(24, 21, 121);
/* oklch */ color: oklch(29.3% 0.159 271.9);

Tailwind

colors: {
  custom: {
    50: '#6855a1',
    500: '#181579',
    950: '#000000',
  },
}

SCSS

$custom: #181579;
$custom-light: #6855a1;
$custom-dark: #000000;

JSON

{
  "hex": "#181579",
  "rgb": {
    "r": 24,
    "g": 21,
    "b": 121
  },
  "hsl": {
    "h": 241.8,
    "s": 70.423,
    "l": 27.843
  },
  "oklch": {
    "l": 0.2925,
    "c": 0.15944,
    "h": 271.9
  },
  "luminance": 0.02111
}

Semantic roles & 50–950 ramp

primary

#181579

secondary

#ABAF3B

accent

#ED3BE8

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07030F

muted

#7A787F

Preview Lab

Preview with #181579

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

Preview Lab → · Contrast checker → · Palette generator →