#143D8F#143D8F

#143D8F is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.6% C 0.144 H 262.1°. Best body text is #FFFFFF at 10.03:1 contrast (WCAG AA passes).

Color values

HEX	#143D8F
RGB	rgb(20, 61, 143)
HSL	hsl(220, 75%, 32%)
HSV	hsv(220, 86%, 56%)
CMYK	cmyk(86%, 57.3%, 0%, 43.9%)
CIE-LAB	lab(28.03, 18.93, -49.23)
CIE-LCH	lch(28.03, 52.74, 291.04°)
OKLab	oklab(38.62% -0.0197 -0.1422)
OKLCH	oklch(38.62% 0.144 262.1)
XYZ	xyz(6.9134, 5.4685, 26.6724)
Luminance	0.0547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143D8F #8F6614

analogous

#147B8F #143D8F #29148F

triadic

#143D8F #8F143D #3D8F14

tetradic

#143D8F #8F147B #8F6614 #148F29

square

#143D8F #8F147B #8F6614 #148F29

split-complementary

#143D8F #8F2914 #7B8F14

monochromatic

#050F24 #0C2659 #143D8F #1C54C5 #3A72E3

Accessibility & contrast

On white

10.03

#143D8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#143D8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143D8F

10.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143D8F	#FFFFFF	#000000	##FFFFFF
##143D8F	1.00	10.03	2.09	10.03
#FFFFFF	10.03	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004892

Deuteranopia (green-blind)

#003D8D

Tritanopia (blue-blind)

#005260

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #143d8f;
/* rgb */ color: rgb(20, 61, 143);
/* oklch */ color: oklch(38.6% 0.144 262.1);

Tailwind

colors: {
  custom: {
    50: '#6a71b0',
    500: '#143d8f',
    950: '#000000',
  },
}

SCSS

$custom: #143d8f;
$custom-light: #6a71b0;
$custom-dark: #000000;

JSON

{
  "hex": "#143d8f",
  "rgb": {
    "r": 20,
    "g": 61,
    "b": 143
  },
  "hsl": {
    "h": 220,
    "s": 75.46,
    "l": 31.961
  },
  "oklch": {
    "l": 0.38621,
    "c": 0.14358,
    "h": 262.1
  },
  "luminance": 0.05469
}

Semantic roles & 50–950 ramp

primary

#143D8F

secondary

#C3963C

accent

#B336F2

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080711

muted

#7A7A80

Preview Lab

Preview with #143D8F

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

Preview Lab → · Contrast checker → · Palette generator →