#181689#181689

#181689 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.4% C 0.178 H 270.4°. Best body text is #FFFFFF at 13.86:1 contrast (WCAG AA passes).

Color values

HEX	#181689
RGB	rgb(24, 22, 137)
HSL	hsl(241, 72%, 31%)
HSV	hsv(241, 84%, 54%)
CMYK	cmyk(82.5%, 83.9%, 0%, 46.3%)
CIE-LAB	lab(18.25, 41.92, -61.57)
CIE-LCH	lch(18.25, 74.49, 304.25°)
OKLab	oklab(31.36% 0.0013 -0.1782)
OKLCH	oklch(31.36% 0.178 270.4)
XYZ	xyz(5.1774, 2.5736, 23.8859)
Luminance	0.0257 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181689 #878916

analogous

#164D89 #181689 #511689

triadic

#181689 #891816 #168918

tetradic

#181689 #89164D #878916 #168951

square

#181689 #89164D #878916 #168951

split-complementary

#181689 #895116 #4D8916

monochromatic

#060520 #0F0E54 #181689 #211EBE #3D3ADF

Accessibility & contrast

On white

13.86

#181689 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#181689 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181689

13.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181689	#FFFFFF	#000000	##FFFFFF
##181689	1.00	13.86	1.51	13.86
#FFFFFF	13.86	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00328C

Deuteranopia (green-blind)

#002687

Tritanopia (blue-blind)

#003B51

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #181689;
/* rgb */ color: rgb(24, 22, 137);
/* oklch */ color: oklch(31.4% 0.178 270.4);

Tailwind

colors: {
  custom: {
    50: '#6d57ad',
    500: '#181689',
    950: '#000000',
  },
}

SCSS

$custom: #181689;
$custom-light: #6d57ad;
$custom-dark: #000000;

JSON

{
  "hex": "#181689",
  "rgb": {
    "r": 24,
    "g": 22,
    "b": 137
  },
  "hsl": {
    "h": 241.043,
    "s": 72.327,
    "l": 31.176
  },
  "oklch": {
    "l": 0.31355,
    "c": 0.17825,
    "h": 270.4
  },
  "luminance": 0.02574
}

Semantic roles & 50–950 ramp

primary

#181689

secondary

#BBBD3E

accent

#EF39EC

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #181689

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

Preview Lab → · Contrast checker → · Palette generator →