#143C8F#143C8F

#143C8F is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.4% C 0.145 H 262.4°. Best body text is #FFFFFF at 10.13:1 contrast (WCAG AA passes).

Color values

HEX	#143C8F
RGB	rgb(20, 60, 143)
HSL	hsl(220, 75%, 32%)
HSV	hsv(220, 86%, 56%)
CMYK	cmyk(86%, 58%, 0%, 43.9%)
CIE-LAB	lab(27.74, 19.63, -49.69)
CIE-LCH	lch(27.74, 53.43, 291.55°)
OKLab	oklab(38.41% -0.019 -0.1436)
OKLCH	oklch(38.41% 0.145 262.4)
XYZ	xyz(6.8605, 5.3628, 26.6548)
Luminance	0.0536 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143C8F #8F6714

analogous

#147A8F #143C8F #2A148F

triadic

#143C8F #8F143C #3C8F14

tetradic

#143C8F #8F147A #8F6714 #148F2A

square

#143C8F #8F147A #8F6714 #148F2A

split-complementary

#143C8F #8F2A14 #7A8F14

monochromatic

#050F24 #0C2559 #143C8F #1C53C5 #3A71E3

Accessibility & contrast

On white

10.13

#143C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#143C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143C8F

10.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143C8F	#FFFFFF	#000000	##FFFFFF
##143C8F	1.00	10.13	2.07	10.13
#FFFFFF	10.13	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004792

Deuteranopia (green-blind)

#003C8D

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #143c8f;
/* rgb */ color: rgb(20, 60, 143);
/* oklch */ color: oklch(38.4% 0.145 262.4);

Tailwind

colors: {
  custom: {
    50: '#6a71b0',
    500: '#143c8f',
    950: '#000000',
  },
}

SCSS

$custom: #143c8f;
$custom-light: #6a71b0;
$custom-dark: #000000;

JSON

{
  "hex": "#143c8f",
  "rgb": {
    "r": 20,
    "g": 60,
    "b": 143
  },
  "hsl": {
    "h": 220.488,
    "s": 75.46,
    "l": 31.961
  },
  "oklch": {
    "l": 0.38406,
    "c": 0.14487,
    "h": 262.4
  },
  "luminance": 0.05364
}

Semantic roles & 50–950 ramp

primary

#143C8F

secondary

#C3973C

accent

#B536F2

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080711

muted

#7A7A80

Preview Lab

Preview with #143C8F

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

Preview Lab → · Contrast checker → · Palette generator →