#143D8E#143D8E

#143D8E is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.5% C 0.142 H 262.0°. Best body text is #FFFFFF at 10.06:1 contrast (WCAG AA passes).

Color values

HEX	#143D8E
RGB	rgb(20, 61, 142)
HSL	hsl(220, 75%, 32%)
HSV	hsv(220, 86%, 56%)
CMYK	cmyk(85.9%, 57%, 0%, 44.3%)
CIE-LAB	lab(27.95, 18.52, -48.74)
CIE-LCH	lch(27.95, 52.14, 290.80°)
OKLab	oklab(38.54% -0.0198 -0.1408)
OKLCH	oklch(38.54% 0.142 262)
XYZ	xyz(6.8380, 5.4384, 26.2753)
Luminance	0.0544 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143D8E #8E6514

analogous

#147A8E #143D8E #28148E

triadic

#143D8E #8E143D #3D8E14

tetradic

#143D8E #8E147A #8E6514 #148E28

square

#143D8E #8E147A #8E6514 #148E28

split-complementary

#143D8E #8E2814 #7A8E14

monochromatic

#050F23 #0C2658 #143D8E #1C54C4 #3972E3

Accessibility & contrast

On white

10.06

#143D8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#143D8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143D8E

10.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143D8E	#FFFFFF	#000000	##FFFFFF
##143D8E	1.00	10.06	2.09	10.06
#FFFFFF	10.06	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004891

Deuteranopia (green-blind)

#003D8C

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #143d8e;
/* rgb */ color: rgb(20, 61, 142);
/* oklch */ color: oklch(38.5% 0.142 262.0);

Tailwind

colors: {
  custom: {
    50: '#6971b0',
    500: '#143d8e',
    950: '#000000',
  },
}

SCSS

$custom: #143d8e;
$custom-light: #6971b0;
$custom-dark: #000000;

JSON

{
  "hex": "#143d8e",
  "rgb": {
    "r": 20,
    "g": 61,
    "b": 142
  },
  "hsl": {
    "h": 219.836,
    "s": 75.309,
    "l": 31.765
  },
  "oklch": {
    "l": 0.38535,
    "c": 0.14218,
    "h": 262
  },
  "luminance": 0.05439
}

Semantic roles & 50–950 ramp

primary

#143D8E

secondary

#C2953C

accent

#B336F2

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #143D8E

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

Preview Lab → · Contrast checker → · Palette generator →