#143D8D#143D8D

#143D8D is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.4% C 0.141 H 261.9°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#143D8D
RGB	rgb(20, 61, 141)
HSL	hsl(220, 75%, 32%)
HSV	hsv(220, 86%, 55%)
CMYK	cmyk(85.8%, 56.7%, 0%, 44.7%)
CIE-LAB	lab(27.87, 18.11, -48.26)
CIE-LCH	lch(27.87, 51.54, 290.57°)
OKLab	oklab(38.45% -0.0198 -0.1394)
OKLCH	oklch(38.45% 0.141 261.9)
XYZ	xyz(6.7632, 5.4085, 25.8816)
Luminance	0.0541 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143D8D #8D6414

analogous

#147A8D #143D8D #27148D

triadic

#143D8D #8D143D #3D8D14

tetradic

#143D8D #8D147A #8D6414 #148D27

square

#143D8D #8D147A #8D6414 #148D27

split-complementary

#143D8D #8D2714 #7A8D14

monochromatic

#050F22 #0C2657 #143D8D #1C54C3 #3972E3

Accessibility & contrast

On white

10.09

#143D8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#143D8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143D8D

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143D8D	#FFFFFF	#000000	##FFFFFF
##143D8D	1.00	10.09	2.08	10.09
#FFFFFF	10.09	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004890

Deuteranopia (green-blind)

#003D8B

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #143d8d;
/* rgb */ color: rgb(20, 61, 141);
/* oklch */ color: oklch(38.4% 0.141 261.9);

Tailwind

colors: {
  custom: {
    50: '#6971af',
    500: '#143d8d',
    950: '#000000',
  },
}

SCSS

$custom: #143d8d;
$custom-light: #6971af;
$custom-dark: #000000;

JSON

{
  "hex": "#143d8d",
  "rgb": {
    "r": 20,
    "g": 61,
    "b": 141
  },
  "hsl": {
    "h": 219.669,
    "s": 75.155,
    "l": 31.569
  },
  "oklch": {
    "l": 0.38448,
    "c": 0.14078,
    "h": 261.9
  },
  "luminance": 0.05409
}

Semantic roles & 50–950 ramp

primary

#143D8D

secondary

#C1943C

accent

#B236F2

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #143D8D

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

Preview Lab → · Contrast checker → · Palette generator →