#143C83#143C83

#143C83 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.4% C 0.128 H 260.9°. Best body text is #FFFFFF at 10.48:1 contrast (WCAG AA passes).

Color values

HEX	#143C83
RGB	rgb(20, 60, 131)
HSL	hsl(218, 74%, 30%)
HSV	hsv(218, 85%, 51%)
CMYK	cmyk(84.7%, 54.2%, 0%, 48.6%)
CIE-LAB	lab(26.79, 14.65, -43.80)
CIE-LCH	lch(26.79, 46.19, 288.50°)
OKLab	oklab(37.38% -0.0202 -0.1263)
OKLCH	oklch(37.38% 0.128 260.9)
XYZ	xyz(5.9996, 5.0184, 22.1208)
Luminance	0.0502 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143C83 #835B14

analogous

#147483 #143C83 #231483

triadic

#143C83 #83143C #3C8314

tetradic

#143C83 #831474 #835B14 #148323

square

#143C83 #831474 #835B14 #148323

split-complementary

#143C83 #832314 #748314

monochromatic

#040C1B #0C244E #143C83 #1C54B8 #3270E0

Accessibility & contrast

On white

10.48

#143C83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#143C83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143C83

10.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143C83	#FFFFFF	#000000	##FFFFFF
##143C83	1.00	10.48	2.00	10.48
#FFFFFF	10.48	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#074586

Deuteranopia (green-blind)

#003B82

Tritanopia (blue-blind)

#004D59

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #143c83;
/* rgb */ color: rgb(20, 60, 131);
/* oklch */ color: oklch(37.4% 0.128 260.9);

Tailwind

colors: {
  custom: {
    50: '#6671a8',
    500: '#143c83',
    950: '#000000',
  },
}

SCSS

$custom: #143c83;
$custom-light: #6671a8;
$custom-dark: #000000;

JSON

{
  "hex": "#143c83",
  "rgb": {
    "r": 20,
    "g": 60,
    "b": 131
  },
  "hsl": {
    "h": 218.378,
    "s": 73.51,
    "l": 29.608
  },
  "oklch": {
    "l": 0.37379,
    "c": 0.1279,
    "h": 260.9
  },
  "luminance": 0.05019
}

Semantic roles & 50–950 ramp

primary

#143C83

secondary

#B88B3B

accent

#AE38F0

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #143C83

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

Preview Lab → · Contrast checker → · Palette generator →