#143C77#143C77

#143C77 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.4% C 0.111 H 258.5°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).

Color values

HEX	#143C77
RGB	rgb(20, 60, 119)
HSL	hsl(216, 71%, 27%)
HSV	hsv(216, 83%, 47%)
CMYK	cmyk(83.2%, 49.6%, 0%, 53.3%)
CIE-LAB	lab(25.90, 9.62, -37.70)
CIE-LCH	lch(25.90, 38.91, 284.32°)
OKLab	oklab(36.41% -0.022 -0.1083)
OKLCH	oklch(36.41% 0.111 258.5)
XYZ	xyz(5.2329, 4.7117, 18.0828)
Luminance	0.0471 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143C77 #774F14

analogous

#146D77 #143C77 #1E1477

triadic

#143C77 #77143C #3C7714

tetradic

#143C77 #77146D #774F14 #14771E

square

#143C77 #77146D #774F14 #14771E

split-complementary

#143C77 #771E14 #6D7714

monochromatic

#040D1A #0B2243 #143C77 #1D56AB #2A72DB

Accessibility & contrast

On white

10.81

#143C77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#143C77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143C77

10.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143C77	#FFFFFF	#000000	##FFFFFF
##143C77	1.00	10.81	1.94	10.81
#FFFFFF	10.81	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B4279

Deuteranopia (green-blind)

#003976

Tritanopia (blue-blind)

#004A53

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #143c77;
/* rgb */ color: rgb(20, 60, 119);
/* oklch */ color: oklch(36.4% 0.111 258.5);

Tailwind

colors: {
  custom: {
    50: '#63719f',
    500: '#143c77',
    950: '#000000',
  },
}

SCSS

$custom: #143c77;
$custom-light: #63719f;
$custom-dark: #000000;

JSON

{
  "hex": "#143c77",
  "rgb": {
    "r": 20,
    "g": 60,
    "b": 119
  },
  "hsl": {
    "h": 215.758,
    "s": 71.223,
    "l": 27.255
  },
  "oklch": {
    "l": 0.36414,
    "c": 0.11054,
    "h": 258.5
  },
  "luminance": 0.04712
}

Semantic roles & 50–950 ramp

primary

#143C77

secondary

#AD7E3A

accent

#A53AEE

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #143C77

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

Preview Lab → · Contrast checker → · Palette generator →