#143E81#143E81

#143E81 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 37.7% C 0.122 H 259.7°. Best body text is #FFFFFF at 10.32:1 contrast (WCAG AA passes).

Color values

HEX	#143E81
RGB	rgb(20, 62, 129)
HSL	hsl(217, 73%, 29%)
HSV	hsv(217, 84%, 51%)
CMYK	cmyk(84.5%, 51.9%, 0%, 49.4%)
CIE-LAB	lab(27.24, 12.41, -41.83)
CIE-LCH	lch(27.24, 43.63, 286.53°)
OKLab	oklab(37.67% -0.022 -0.1204)
OKLCH	oklch(37.67% 0.122 259.7)
XYZ	xyz(5.9721, 5.1782, 21.4494)
Luminance	0.0518 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143E81 #815714

analogous

#147581 #143E81 #211481

triadic

#143E81 #81143E #3E8114

tetradic

#143E81 #811475 #815714 #148121

square

#143E81 #811475 #815714 #148121

split-complementary

#143E81 #812114 #758114

monochromatic

#040D1A #0C254C #143E81 #1C57B6 #3074DF

Accessibility & contrast

On white

10.32

#143E81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#143E81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143E81

10.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143E81	#FFFFFF	#000000	##FFFFFF
##143E81	1.00	10.32	2.04	10.32
#FFFFFF	10.32	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#144683

Deuteranopia (green-blind)

#003C80

Tritanopia (blue-blind)

#004E59

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #143e81;
/* rgb */ color: rgb(20, 62, 129);
/* oklch */ color: oklch(37.7% 0.122 259.7);

Tailwind

colors: {
  custom: {
    50: '#6672a6',
    500: '#143e81',
    950: '#000000',
  },
}

SCSS

$custom: #143e81;
$custom-light: #6672a6;
$custom-dark: #000000;

JSON

{
  "hex": "#143e81",
  "rgb": {
    "r": 20,
    "g": 62,
    "b": 129
  },
  "hsl": {
    "h": 216.881,
    "s": 73.154,
    "l": 29.216
  },
  "oklch": {
    "l": 0.37674,
    "c": 0.12242,
    "h": 259.7
  },
  "luminance": 0.05179
}

Semantic roles & 50–950 ramp

primary

#143E81

secondary

#B6873B

accent

#A938F0

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #143E81

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

Preview Lab → · Contrast checker → · Palette generator →