#143F8F#143F8F

#143F8F is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.1% C 0.141 H 261.4°. Best body text is #FFFFFF at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#143F8F
RGB	rgb(20, 63, 143)
HSL	hsl(219, 75%, 32%)
HSV	hsv(219, 86%, 56%)
CMYK	cmyk(86%, 55.9%, 0%, 43.9%)
CIE-LAB	lab(28.61, 17.54, -48.29)
CIE-LCH	lch(28.61, 51.38, 289.96°)
OKLab	oklab(39.06% -0.021 -0.1394)
OKLCH	oklch(39.06% 0.141 261.4)
XYZ	xyz(7.0221, 5.6860, 26.7087)
Luminance	0.0569 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143F8F #8F6414

analogous

#147D8F #143F8F #26148F

triadic

#143F8F #8F143F #3F8F14

tetradic

#143F8F #8F147D #8F6414 #148F26

square

#143F8F #8F147D #8F6414 #148F26

split-complementary

#143F8F #8F2614 #7D8F14

monochromatic

#051024 #0C2759 #143F8F #1C57C5 #3A75E3

Accessibility & contrast

On white

9.83

#143F8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#143F8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143F8F

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143F8F	#FFFFFF	#000000	##FFFFFF
##143F8F	1.00	9.83	2.14	9.83
#FFFFFF	9.83	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004992

Deuteranopia (green-blind)

#003E8D

Tritanopia (blue-blind)

#005360

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #143f8f;
/* rgb */ color: rgb(20, 63, 143);
/* oklch */ color: oklch(39.1% 0.141 261.4);

Tailwind

colors: {
  custom: {
    50: '#6a73b0',
    500: '#143f8f',
    950: '#000000',
  },
}

SCSS

$custom: #143f8f;
$custom-light: #6a73b0;
$custom-dark: #000000;

JSON

{
  "hex": "#143f8f",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 143
  },
  "hsl": {
    "h": 219.024,
    "s": 75.46,
    "l": 31.961
  },
  "oklch": {
    "l": 0.39057,
    "c": 0.141,
    "h": 261.4
  },
  "luminance": 0.05687
}

Semantic roles & 50–950 ramp

primary

#143F8F

secondary

#C3943C

accent

#B036F2

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080811

muted

#7A7B80

Preview Lab

Preview with #143F8F

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

Preview Lab → · Contrast checker → · Palette generator →