#143A8D#143A8D

#143A8D is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.8% C 0.145 H 262.9°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX#143A8D
RGBrgb(20, 58, 141)
HSLhsl(221, 75%, 32%)
HSVhsv(221, 86%, 55%)
CMYKcmyk(85.8%, 58.9%, 0%, 44.7%)
CIE-LABlab(27.01, 20.20, -49.65)
CIE-LCHlch(27.01, 53.61, 292.14°)
OKLaboklab(37.8% -0.0179 -0.1435)
OKLCHoklch(37.8% 0.145 262.9)
XYZxyz(6.6075, 5.0971, 25.8297)
Luminance0.0510 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#143A8D #8D6714
analogous
#14778D #143A8D #2B148D
triadic
#143A8D #8D143A #3A8D14
tetradic
#143A8D #8D1477 #8D6714 #148D2B
square
#143A8D #8D1477 #8D6714 #148D2B
split-complementary
#143A8D #8D2B14 #778D14
monochromatic
#050E22 #0C2457 #143A8D #1C50C3 #396EE3

Accessibility & contrast

On white

10.40
#143A8D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.02
#143A8D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143A8D
10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##143A8D#FFFFFF#000000##FFFFFF
##143A8D1.0010.402.0210.40
#FFFFFF10.401.0021.001.00
#0000002.0221.001.0021.00
##FFFFFF10.401.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004690
Deuteranopia (green-blind)
#003B8B
Tritanopia (blue-blind)
#004F5D
Achromatopsia (no color)
#404040

Design tokens & code

CSS
--color: #143a8d;
/* rgb */ color: rgb(20, 58, 141);
/* oklch */ color: oklch(37.8% 0.145 262.9);
Tailwind
colors: {
  custom: {
    50: '#696faf',
    500: '#143a8d',
    950: '#000000',
  },
}
SCSS
$custom: #143a8d;
$custom-light: #696faf;
$custom-dark: #000000;
JSON
{
  "hex": "#143a8d",
  "rgb": {
    "r": 20,
    "g": 58,
    "b": 141
  },
  "hsl": {
    "h": 221.157,
    "s": 75.155,
    "l": 31.569
  },
  "oklch": {
    "l": 0.378,
    "c": 0.14464,
    "h": 262.9
  },
  "luminance": 0.05098
}

Semantic roles & 50–950 ramp

primary
#143A8D
secondary
#C1973C
accent
#B736F2
background
#F6F6FA
surface
#ECECF5
border
#C7C7CF
text
#080710
muted
#7A7A7F

Preview Lab

Preview with #143A8D

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

Preview Lab → · Contrast checker → · Palette generator →

#143A8D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva