#143377#143377

#143377 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.3% C 0.122 H 263.1°. Best body text is #FFFFFF at 11.87:1 contrast (WCAG AA passes).

Color values

HEX	#143377
RGB	rgb(20, 51, 119)
HSL	hsl(221, 71%, 27%)
HSV	hsv(221, 83%, 47%)
CMYK	cmyk(83.2%, 57.1%, 0%, 53.3%)
CIE-LAB	lab(23.16, 16.03, -42.12)
CIE-LCH	lch(23.16, 45.07, 290.83°)
OKLab	oklab(34.33% -0.0148 -0.1215)
OKLCH	oklch(34.33% 0.122 263.1)
XYZ	xyz(4.8009, 3.8477, 17.9388)
Luminance	0.0385 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143377 #775814

analogous

#146577 #143377 #261477

triadic

#143377 #771433 #337714

tetradic

#143377 #771465 #775814 #147726

square

#143377 #771465 #775814 #147726

split-complementary

#143377 #772614 #657714

monochromatic

#040B1A #0B1D43 #143377 #1D49AB #2A62DB

Accessibility & contrast

On white

11.87

#143377 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#143377 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143377

11.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143377	#FFFFFF	#000000	##FFFFFF
##143377	1.00	11.87	1.77	11.87
#FFFFFF	11.87	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C79

Deuteranopia (green-blind)

#003376

Tritanopia (blue-blind)

#00444F

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #143377;
/* rgb */ color: rgb(20, 51, 119);
/* oklch */ color: oklch(34.3% 0.122 263.1);

Tailwind

colors: {
  custom: {
    50: '#646a9f',
    500: '#143377',
    950: '#000000',
  },
}

SCSS

$custom: #143377;
$custom-light: #646a9f;
$custom-dark: #000000;

JSON

{
  "hex": "#143377",
  "rgb": {
    "r": 20,
    "g": 51,
    "b": 119
  },
  "hsl": {
    "h": 221.212,
    "s": 71.223,
    "l": 27.255
  },
  "oklch": {
    "l": 0.34326,
    "c": 0.12244,
    "h": 263.1
  },
  "luminance": 0.03848
}

Semantic roles & 50–950 ramp

primary

#143377

secondary

#AD893A

accent

#B63AEE

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #143377

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

Preview Lab → · Contrast checker → · Palette generator →