#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
RGB	rgb(20, 58, 141)
HSL	hsl(221, 75%, 32%)
HSV	hsv(221, 86%, 55%)
CMYK	cmyk(85.8%, 58.9%, 0%, 44.7%)
CIE-LAB	lab(27.01, 20.20, -49.65)
CIE-LCH	lch(27.01, 53.61, 292.14°)
OKLab	oklab(37.8% -0.0179 -0.1435)
OKLCH	oklch(37.8% 0.145 262.9)
XYZ	xyz(6.6075, 5.0971, 25.8297)
Luminance	0.0510 (WCAG relative)
Temperature	cool
Family	blue

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
##143A8D	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

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 →