#183588#183588

#183588 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.4% C 0.143 H 265.1°. Best body text is #FFFFFF at 11.03:1 contrast (WCAG AA passes).

Color values

HEX#183588
RGBrgb(24, 53, 136)
HSLhsl(224, 70%, 31%)
HSVhsv(224, 82%, 53%)
CMYKcmyk(82.4%, 61%, 0%, 46.7%)
CIE-LABlab(25.31, 22.03, -49.31)
CIE-LCHlch(25.31, 54.01, 294.07°)
OKLaboklab(36.43% -0.0122 -0.1426)
OKLCHoklch(36.43% 0.143 265.1)
XYZxyz(6.0922, 4.5173, 23.8386)
Luminance0.0452 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#183588 #886B18
analogous
#186D88 #183588 #331888
triadic
#183588 #881835 #358818
tetradic
#183588 #88186D #886B18 #188833
square
#183588 #88186D #886B18 #188833
split-complementary
#183588 #883318 #6D8818
monochromatic
#060C20 #0F2154 #183588 #2149BC #3E67DD

Accessibility & contrast

On white

11.03
#183588 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.90
#183588 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183588
11.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##183588#FFFFFF#000000##FFFFFF
##1835881.0011.031.9011.03
#FFFFFF11.031.0021.001.00
#0000001.9021.001.0021.00
##FFFFFF11.031.0021.001.00

Color blindness preview

Protanopia (red-blind)
#00418B
Deuteranopia (green-blind)
#003786
Tritanopia (blue-blind)
#004A59
Achromatopsia (no color)
#3C3C3C

Design tokens & code

CSS
--color: #183588;
/* rgb */ color: rgb(24, 53, 136);
/* oklch */ color: oklch(36.4% 0.143 265.1);
Tailwind
colors: {
  custom: {
    50: '#696bab',
    500: '#183588',
    950: '#000000',
  },
}
SCSS
$custom: #183588;
$custom-light: #696bab;
$custom-dark: #000000;
JSON
{
  "hex": "#183588",
  "rgb": {
    "r": 24,
    "g": 53,
    "b": 136
  },
  "hsl": {
    "h": 224.464,
    "s": 70,
    "l": 31.373
  },
  "oklch": {
    "l": 0.36432,
    "c": 0.14308,
    "h": 265.1
  },
  "luminance": 0.04518
}

Semantic roles & 50–950 ramp

primary
#183588
secondary
#BC9C40
accent
#BF3BED
background
#F6F6FA
surface
#ECEBF4
border
#C7C6CE
text
#070610
muted
#7A7A7F

Preview Lab

Preview with #183588

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

Preview Lab → · Contrast checker → · Palette generator →

#183588 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva