#143F81#143F81

#143F81 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 37.9% C 0.121 H 259.2°. Best body text is #FFFFFF at 10.21:1 contrast (WCAG AA passes).

Color values

HEX#143F81
RGBrgb(20, 63, 129)
HSLhsl(216, 73%, 29%)
HSVhsv(216, 84%, 51%)
CMYKcmyk(84.5%, 51.2%, 0%, 49.4%)
CIE-LABlab(27.54, 11.71, -41.34)
CIE-LCHlch(27.54, 42.96, 285.82°)
OKLaboklab(37.91% -0.0228 -0.119)
OKLCHoklch(37.91% 0.121 259.2)
XYZxyz(6.0270, 5.2880, 21.4677)
Luminance0.0529 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#143F81 #815614
analogous
#147681 #143F81 #201481
triadic
#143F81 #81143F #3F8114
tetradic
#143F81 #811476 #815614 #148120
square
#143F81 #811476 #815614 #148120
split-complementary
#143F81 #812014 #768114
monochromatic
#040D1A #0C254C #143F81 #1C59B6 #3075DF

Accessibility & contrast

On white

10.21
#143F81 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.06
#143F81 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143F81
10.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##143F81#FFFFFF#000000##FFFFFF
##143F811.0010.212.0610.21
#FFFFFF10.211.0021.001.00
#0000002.0621.001.0021.00
##FFFFFF10.211.0021.001.00

Color blindness preview

Protanopia (red-blind)
#174683
Deuteranopia (green-blind)
#003C80
Tritanopia (blue-blind)
#004F5A
Achromatopsia (no color)
#414141

Design tokens & code

CSS
--color: #143f81;
/* rgb */ color: rgb(20, 63, 129);
/* oklch */ color: oklch(37.9% 0.121 259.2);
Tailwind
colors: {
  custom: {
    50: '#6673a6',
    500: '#143f81',
    950: '#000000',
  },
}
SCSS
$custom: #143f81;
$custom-light: #6673a6;
$custom-dark: #000000;
JSON
{
  "hex": "#143f81",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 129
  },
  "hsl": {
    "h": 216.33,
    "s": 73.154,
    "l": 29.216
  },
  "oklch": {
    "l": 0.37907,
    "c": 0.12113,
    "h": 259.2
  },
  "luminance": 0.05289
}

Semantic roles & 50–950 ramp

primary
#143F81
secondary
#B6853B
accent
#A738F0
background
#F6F6FA
surface
#EBECF4
border
#C6C7CE
text
#07080F
muted
#7A7B7F

Preview Lab

Preview with #143F81

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

Preview Lab → · Contrast checker → · Palette generator →

#143F81 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva