#143781#143781

#143781 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.1% C 0.132 H 262.7°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#143781
RGB	rgb(20, 55, 129)
HSL	hsl(221, 73%, 29%)
HSV	hsv(221, 84%, 51%)
CMYK	cmyk(84.5%, 57.4%, 0%, 49.4%)
CIE-LAB	lab(25.15, 17.35, -45.20)
CIE-LCH	lch(25.15, 48.42, 291.00°)
OKLab	oklab(36.09% -0.0168 -0.1305)
OKLCH	oklch(36.09% 0.132 262.7)
XYZ	xyz(5.6157, 4.4654, 21.3306)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143781 #815E14

analogous

#146E81 #143781 #281481

triadic

#143781 #811437 #378114

tetradic

#143781 #81146E #815E14 #148128

square

#143781 #81146E #815E14 #148128

split-complementary

#143781 #812814 #6E8114

monochromatic

#040B1A #0C204C #143781 #1C4EB6 #3068DF

Accessibility & contrast

On white

11.09

#143781 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#143781 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143781

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143781	#FFFFFF	#000000	##FFFFFF
##143781	1.00	11.09	1.89	11.09
#FFFFFF	11.09	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004184

Deuteranopia (green-blind)

#003780

Tritanopia (blue-blind)

#004956

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #143781;
/* rgb */ color: rgb(20, 55, 129);
/* oklch */ color: oklch(36.1% 0.132 262.7);

Tailwind

colors: {
  custom: {
    50: '#666da6',
    500: '#143781',
    950: '#000000',
  },
}

SCSS

$custom: #143781;
$custom-light: #666da6;
$custom-dark: #000000;

JSON

{
  "hex": "#143781",
  "rgb": {
    "r": 20,
    "g": 55,
    "b": 129
  },
  "hsl": {
    "h": 220.734,
    "s": 73.154,
    "l": 29.216
  },
  "oklch": {
    "l": 0.36089,
    "c": 0.13159,
    "h": 262.7
  },
  "luminance": 0.04466
}

Semantic roles & 50–950 ramp

primary

#143781

secondary

#B68E3B

accent

#B538F0

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #143781

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

Preview Lab → · Contrast checker → · Palette generator →