#143B8E#143B8E

#143B8E is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.1% C 0.145 H 262.7°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX#143B8E
RGBrgb(20, 59, 142)
HSLhsl(221, 75%, 32%)
HSVhsv(221, 86%, 56%)
CMYKcmyk(85.9%, 58.5%, 0%, 44.3%)
CIE-LABlab(27.38, 19.92, -49.67)
CIE-LCHlch(27.38, 53.52, 291.85°)
OKLaboklab(38.1% -0.0185 -0.1436)
OKLCHoklch(38.1% 0.145 262.7)
XYZxyz(6.7332, 5.2288, 26.2403)
Luminance0.0523 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#143B8E #8E6714
analogous
#14788E #143B8E #2A148E
triadic
#143B8E #8E143B #3B8E14
tetradic
#143B8E #8E1478 #8E6714 #148E2A
square
#143B8E #8E1478 #8E6714 #148E2A
split-complementary
#143B8E #8E2A14 #788E14
monochromatic
#050E23 #0C2558 #143B8E #1C51C4 #3970E3

Accessibility & contrast

On white

10.26
#143B8E on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.05
#143B8E on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143B8E
10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##143B8E#FFFFFF#000000##FFFFFF
##143B8E1.0010.262.0510.26
#FFFFFF10.261.0021.001.00
#0000002.0521.001.0021.00
##FFFFFF10.261.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004691
Deuteranopia (green-blind)
#003B8C
Tritanopia (blue-blind)
#00505E
Achromatopsia (no color)
#414141

Design tokens & code

CSS
--color: #143b8e;
/* rgb */ color: rgb(20, 59, 142);
/* oklch */ color: oklch(38.1% 0.145 262.7);
Tailwind
colors: {
  custom: {
    50: '#6a70b0',
    500: '#143b8e',
    950: '#000000',
  },
}
SCSS
$custom: #143b8e;
$custom-light: #6a70b0;
$custom-dark: #000000;
JSON
{
  "hex": "#143b8e",
  "rgb": {
    "r": 20,
    "g": 59,
    "b": 142
  },
  "hsl": {
    "h": 220.82,
    "s": 75.309,
    "l": 31.765
  },
  "oklch": {
    "l": 0.38103,
    "c": 0.14475,
    "h": 262.7
  },
  "luminance": 0.0523
}

Semantic roles & 50–950 ramp

primary
#143B8E
secondary
#C2973C
accent
#B636F2
background
#F6F6FA
surface
#ECECF5
border
#C7C7CF
text
#080710
muted
#7A7A7F

Preview Lab

Preview with #143B8E

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

Preview Lab → · Contrast checker → · Palette generator →

#143B8E Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva