#143F8A#143F8A

#143F8A is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.6% C 0.134 H 260.7°. Best body text is #FFFFFF at 9.96:1 contrast (WCAG AA passes).

Color values

HEX#143F8A
RGBrgb(20, 63, 138)
HSLhsl(218, 75%, 31%)
HSVhsv(218, 86%, 54%)
CMYKcmyk(85.5%, 54.3%, 0%, 45.9%)
CIE-LABlab(28.22, 15.47, -45.84)
CIE-LCHlch(28.22, 48.38, 288.64°)
OKLaboklab(38.64% -0.0215 -0.1322)
OKLCHoklch(38.64% 0.134 260.7)
XYZxyz(6.6518, 5.5379, 24.7582)
Luminance0.0554 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#143F8A #8A5F14
analogous
#147A8A #143F8A #24148A
triadic
#143F8A #8A143F #3F8A14
tetradic
#143F8A #8A147A #8A5F14 #148A24
square
#143F8A #8A147A #8A5F14 #148A24
split-complementary
#143F8A #8A2414 #7A8A14
monochromatic
#050E1F #0C2755 #143F8A #1C57BF #3675E2

Accessibility & contrast

On white

9.96
#143F8A on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.11
#143F8A on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143F8A
9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##143F8A#FFFFFF#000000##FFFFFF
##143F8A1.009.962.119.96
#FFFFFF9.961.0021.001.00
#0000002.1121.001.0021.00
##FFFFFF9.961.0021.001.00

Color blindness preview

Protanopia (red-blind)
#04488D
Deuteranopia (green-blind)
#003E89
Tritanopia (blue-blind)
#00515E
Achromatopsia (no color)
#434343

Design tokens & code

CSS
--color: #143f8a;
/* rgb */ color: rgb(20, 63, 138);
/* oklch */ color: oklch(38.6% 0.134 260.7);
Tailwind
colors: {
  custom: {
    50: '#6873ad',
    500: '#143f8a',
    950: '#000000',
  },
}
SCSS
$custom: #143f8a;
$custom-light: #6873ad;
$custom-dark: #000000;
JSON
{
  "hex": "#143f8a",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 138
  },
  "hsl": {
    "h": 218.136,
    "s": 74.684,
    "l": 30.98
  },
  "oklch": {
    "l": 0.38637,
    "c": 0.13396,
    "h": 260.7
  },
  "luminance": 0.05539
}

Semantic roles & 50–950 ramp

primary
#143F8A
secondary
#BE8F3C
accent
#AD36F1
background
#F6F6FA
surface
#ECECF4
border
#C7C7CE
text
#070810
muted
#7A7B7F

Preview Lab

Preview with #143F8A

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

Preview Lab → · Contrast checker → · Palette generator →

#143F8A Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva