#181889#181889

#181889 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.6% C 0.177 H 270.3°. Best body text is #FFFFFF at 13.72:1 contrast (WCAG AA passes).

Color values

HEX	#181889
RGB	rgb(24, 24, 137)
HSL	hsl(240, 70%, 32%)
HSV	hsv(240, 82%, 54%)
CMYK	cmyk(82.5%, 82.5%, 0%, 46.3%)
CIE-LAB	lab(18.60, 40.90, -60.99)
CIE-LCH	lch(18.60, 73.44, 303.84°)
OKLab	oklab(31.6% 0.0009 -0.1766)
OKLCH	oklch(31.6% 0.177 270.3)
XYZ	xyz(5.2171, 2.6530, 23.8992)
Luminance	0.0265 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181889 #898918

analogous

#185189 #181889 #511889

triadic

#181889 #891818 #188918

tetradic

#181889 #891851 #898918 #188951

square

#181889 #891851 #898918 #188951

split-complementary

#181889 #895118 #518918

monochromatic

#060621 #0F0F55 #181889 #2121BD #3E3EDD

Accessibility & contrast

On white

13.72

#181889 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#181889 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181889

13.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181889	#FFFFFF	#000000	##FFFFFF
##181889	1.00	13.72	1.53	13.72
#FFFFFF	13.72	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338C

Deuteranopia (green-blind)

#002787

Tritanopia (blue-blind)

#003C51

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #181889;
/* rgb */ color: rgb(24, 24, 137);
/* oklch */ color: oklch(31.6% 0.177 270.3);

Tailwind

colors: {
  custom: {
    50: '#6d58ad',
    500: '#181889',
    950: '#000000',
  },
}

SCSS

$custom: #181889;
$custom-light: #6d58ad;
$custom-dark: #000000;

JSON

{
  "hex": "#181889",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 137
  },
  "hsl": {
    "h": 240,
    "s": 70.186,
    "l": 31.569
  },
  "oklch": {
    "l": 0.31598,
    "c": 0.1766,
    "h": 270.3
  },
  "luminance": 0.02654
}

Semantic roles & 50–950 ramp

primary

#181889

secondary

#BDBD40

accent

#ED3BED

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #181889

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

Preview Lab → · Contrast checker → · Palette generator →