#143A8F#143A8F

#143A8F is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.0% C 0.147 H 263.1°. Best body text is #FFFFFF at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#143A8F
RGB	rgb(20, 58, 143)
HSL	hsl(221, 75%, 32%)
HSV	hsv(221, 86%, 56%)
CMYK	cmyk(86%, 59.4%, 0%, 43.9%)
CIE-LAB	lab(27.18, 21.02, -50.61)
CIE-LCH	lch(27.18, 54.81, 292.56°)
OKLab	oklab(37.98% -0.0178 -0.1463)
OKLCH	oklch(37.98% 0.147 263.1)
XYZ	xyz(6.7577, 5.1572, 26.6205)
Luminance	0.0516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143A8F #8F6914

analogous

#14788F #143A8F #2B148F

triadic

#143A8F #8F143A #3A8F14

tetradic

#143A8F #8F1478 #8F6914 #148F2B

square

#143A8F #8F1478 #8F6914 #148F2B

split-complementary

#143A8F #8F2B14 #788F14

monochromatic

#050E24 #0C2459 #143A8F #1C50C5 #3A6EE3

Accessibility & contrast

On white

10.34

#143A8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#143A8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143A8F

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143A8F	#FFFFFF	#000000	##FFFFFF
##143A8F	1.00	10.34	2.03	10.34
#FFFFFF	10.34	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004692

Deuteranopia (green-blind)

#003B8D

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #143a8f;
/* rgb */ color: rgb(20, 58, 143);
/* oklch */ color: oklch(38.0% 0.147 263.1);

Tailwind

colors: {
  custom: {
    50: '#6a6fb1',
    500: '#143a8f',
    950: '#000000',
  },
}

SCSS

$custom: #143a8f;
$custom-light: #6a6fb1;
$custom-dark: #000000;

JSON

{
  "hex": "#143a8f",
  "rgb": {
    "r": 20,
    "g": 58,
    "b": 143
  },
  "hsl": {
    "h": 221.463,
    "s": 75.46,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37979,
    "c": 0.14743,
    "h": 263.1
  },
  "luminance": 0.05158
}

Semantic roles & 50–950 ramp

primary

#143A8F

secondary

#C3993C

accent

#B836F2

background

#F6F6FB

surface

#ECECF6

border

#C7C7D0

text

#080711

muted

#7A7A80

Preview Lab

Preview with #143A8F

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

Preview Lab → · Contrast checker → · Palette generator →