#181566#181566

#181566 is a dark, vivid blue. Relative luminance 0.017; OKLCH L 27.0% C 0.135 H 274.2°. Best body text is #FFFFFF at 15.70:1 contrast (WCAG AA passes).

Color values

HEX	#181566
RGB	rgb(24, 21, 102)
HSL	hsl(242, 66%, 24%)
HSV	hsv(242, 79%, 40%)
CMYK	cmyk(76.5%, 79.4%, 0%, 60%)
CIE-LAB	lab(13.77, 30.46, -46.49)
CIE-LCH	lch(13.77, 55.57, 303.23°)
OKLab	oklab(26.97% 0.0098 -0.1345)
OKLCH	oklch(26.97% 0.135 274.2)
XYZ	xyz(3.0423, 1.6895, 12.7336)
Luminance	0.0169 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181566 #636615

analogous

#153B66 #181566 #411566

triadic

#181566 #661815 #156618

tetradic

#181566 #66153B #636615 #156641

square

#181566 #66153B #636615 #156641

split-complementary

#181566 #664115 #3B6615

monochromatic

#060519 #0C0B33 #181566 #241F99 #302ACC

Accessibility & contrast

On white

15.70

#181566 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#181566 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181566

15.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181566	#FFFFFF	#000000	##FFFFFF
##181566	1.00	15.70	1.34	15.70
#FFFFFF	15.70	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002768

Deuteranopia (green-blind)

#001F65

Tritanopia (blue-blind)

#002D3C

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #181566;
/* rgb */ color: rgb(24, 21, 102);
/* oklch */ color: oklch(27.0% 0.135 274.2);

Tailwind

colors: {
  custom: {
    50: '#635493',
    500: '#181566',
    950: '#000000',
  },
}

SCSS

$custom: #181566;
$custom-light: #635493;
$custom-dark: #000000;

JSON

{
  "hex": "#181566",
  "rgb": {
    "r": 24,
    "g": 21,
    "b": 102
  },
  "hsl": {
    "h": 242.222,
    "s": 65.854,
    "l": 24.118
  },
  "oklch": {
    "l": 0.26969,
    "c": 0.13481,
    "h": 274.2
  },
  "luminance": 0.0169
}

Semantic roles & 50–950 ramp

primary

#181566

secondary

#999D3A

accent

#E93FE3

background

#F6F4F9

surface

#EBE7F1

border

#C6C3CB

text

#06020D

muted

#7A787E

Preview Lab

Preview with #181566

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

Preview Lab → · Contrast checker → · Palette generator →