#143F8D#143F8D

#143F8D is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.9% C 0.138 H 261.2°. Best body text is #FFFFFF at 9.88:1 contrast (WCAG AA passes).

Color values

HEX	#143F8D
RGB	rgb(20, 63, 141)
HSL	hsl(219, 75%, 32%)
HSV	hsv(219, 86%, 55%)
CMYK	cmyk(85.8%, 55.3%, 0%, 44.7%)
CIE-LAB	lab(28.45, 16.71, -47.31)
CIE-LCH	lch(28.45, 50.18, 289.45°)
OKLab	oklab(38.89% -0.0212 -0.1366)
OKLCH	oklch(38.89% 0.138 261.2)
XYZ	xyz(6.8720, 5.6260, 25.9179)
Luminance	0.0563 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143F8D #8D6214

analogous

#147C8D #143F8D #26148D

triadic

#143F8D #8D143F #3F8D14

tetradic

#143F8D #8D147C #8D6214 #148D26

square

#143F8D #8D147C #8D6214 #148D26

split-complementary

#143F8D #8D2614 #7C8D14

monochromatic

#050F22 #0C2757 #143F8D #1C57C3 #3975E3

Accessibility & contrast

On white

9.88

#143F8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#143F8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143F8D

9.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143F8D	#FFFFFF	#000000	##FFFFFF
##143F8D	1.00	9.88	2.13	9.88
#FFFFFF	9.88	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004990

Deuteranopia (green-blind)

#003E8B

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #143f8d;
/* rgb */ color: rgb(20, 63, 141);
/* oklch */ color: oklch(38.9% 0.138 261.2);

Tailwind

colors: {
  custom: {
    50: '#6973af',
    500: '#143f8d',
    950: '#000000',
  },
}

SCSS

$custom: #143f8d;
$custom-light: #6973af;
$custom-dark: #000000;

JSON

{
  "hex": "#143f8d",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 141
  },
  "hsl": {
    "h": 218.678,
    "s": 75.155,
    "l": 31.569
  },
  "oklch": {
    "l": 0.38888,
    "c": 0.1382,
    "h": 261.2
  },
  "luminance": 0.05627
}

Semantic roles & 50–950 ramp

primary

#143F8D

secondary

#C1923C

accent

#AF36F2

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #143F8D

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

Preview Lab → · Contrast checker → · Palette generator →