#143D89#143D89

#143D89 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.1% C 0.135 H 261.4°. Best body text is #FFFFFF at 10.20:1 contrast (WCAG AA passes).

Color values

HEX	#143D89
RGB	rgb(20, 61, 137)
HSL	hsl(219, 75%, 31%)
HSV	hsv(219, 85%, 54%)
CMYK	cmyk(85.4%, 55.5%, 0%, 46.3%)
CIE-LAB	lab(27.55, 16.45, -46.30)
CIE-LCH	lch(27.55, 49.13, 289.56°)
OKLab	oklab(38.11% -0.0202 -0.1336)
OKLCH	oklch(38.11% 0.135 261.4)
XYZ	xyz(6.4710, 5.2916, 24.3424)
Luminance	0.0529 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143D89 #896014

analogous

#147789 #143D89 #251489

triadic

#143D89 #89143D #3D8914

tetradic

#143D89 #891477 #896014 #148925

square

#143D89 #891477 #896014 #148925

split-complementary

#143D89 #892514 #778914

monochromatic

#040D1E #0C2554 #143D89 #1C55BE #3672E2

Accessibility & contrast

On white

10.20

#143D89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#143D89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143D89

10.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143D89	#FFFFFF	#000000	##FFFFFF
##143D89	1.00	10.20	2.06	10.20
#FFFFFF	10.20	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00478C

Deuteranopia (green-blind)

#003C88

Tritanopia (blue-blind)

#00505D

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #143d89;
/* rgb */ color: rgb(20, 61, 137);
/* oklch */ color: oklch(38.1% 0.135 261.4);

Tailwind

colors: {
  custom: {
    50: '#6871ac',
    500: '#143d89',
    950: '#000000',
  },
}

SCSS

$custom: #143d89;
$custom-light: #6871ac;
$custom-dark: #000000;

JSON

{
  "hex": "#143d89",
  "rgb": {
    "r": 20,
    "g": 61,
    "b": 137
  },
  "hsl": {
    "h": 218.974,
    "s": 74.522,
    "l": 30.784
  },
  "oklch": {
    "l": 0.38106,
    "c": 0.13513,
    "h": 261.4
  },
  "luminance": 0.05292
}

Semantic roles & 50–950 ramp

primary

#143D89

secondary

#BD903C

accent

#B037F1

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #143D89

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

Preview Lab → · Contrast checker → · Palette generator →