#183688#183688

#183688 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.6% C 0.142 H 264.8°. Best body text is #FFFFFF at 10.93:1 contrast (WCAG AA passes).

Color values

HEX#183688
RGBrgb(24, 54, 136)
HSLhsl(224, 70%, 31%)
HSVhsv(224, 82%, 53%)
CMYKcmyk(82.4%, 60.3%, 0%, 46.7%)
CIE-LABlab(25.59, 21.33, -48.86)
CIE-LCHlch(25.59, 53.31, 293.58°)
OKLaboklab(36.64% -0.0128 -0.1412)
OKLCHoklch(36.64% 0.142 264.8)
XYZxyz(6.1382, 4.6094, 23.8540)
Luminance0.0461 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#183688 #886A18
analogous
#186E88 #183688 #321888
triadic
#183688 #881836 #368818
tetradic
#183688 #88186E #886A18 #188832
square
#183688 #88186E #886A18 #188832
split-complementary
#183688 #883218 #6E8818
monochromatic
#060D20 #0F2154 #183688 #214BBC #3E68DD

Accessibility & contrast

On white

10.93
#183688 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.92
#183688 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183688
10.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##183688#FFFFFF#000000##FFFFFF
##1836881.0010.931.9210.93
#FFFFFF10.931.0021.001.00
#0000001.9221.001.0021.00
##FFFFFF10.931.0021.001.00

Color blindness preview

Protanopia (red-blind)
#00428B
Deuteranopia (green-blind)
#003886
Tritanopia (blue-blind)
#004B59
Achromatopsia (no color)
#3D3D3D

Design tokens & code

CSS
--color: #183688;
/* rgb */ color: rgb(24, 54, 136);
/* oklch */ color: oklch(36.6% 0.142 264.8);
Tailwind
colors: {
  custom: {
    50: '#696cab',
    500: '#183688',
    950: '#000000',
  },
}
SCSS
$custom: #183688;
$custom-light: #696cab;
$custom-dark: #000000;
JSON
{
  "hex": "#183688",
  "rgb": {
    "r": 24,
    "g": 54,
    "b": 136
  },
  "hsl": {
    "h": 223.929,
    "s": 70,
    "l": 31.373
  },
  "oklch": {
    "l": 0.36641,
    "c": 0.14178,
    "h": 264.8
  },
  "luminance": 0.0461
}

Semantic roles & 50–950 ramp

primary
#183688
secondary
#BC9B40
accent
#BD3BED
background
#F6F6FA
surface
#ECEBF4
border
#C7C6CE
text
#070710
muted
#7A7A7F

Preview Lab

Preview with #183688

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

Preview Lab → · Contrast checker → · Palette generator →

#183688 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva