#143D80#143D80

#143D80 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.4% C 0.122 H 259.9°. Best body text is #FFFFFF at 10.45:1 contrast (WCAG AA passes).

Color values

HEX	#143D80
RGB	rgb(20, 61, 128)
HSL	hsl(217, 73%, 29%)
HSV	hsv(217, 84%, 50%)
CMYK	cmyk(84.4%, 52.3%, 0%, 49.8%)
CIE-LAB	lab(26.86, 12.70, -41.81)
CIE-LCH	lch(26.86, 43.69, 286.89°)
OKLab	oklab(37.36% -0.0214 -0.1204)
OKLCH	oklch(37.36% 0.122 259.9)
XYZ	xyz(5.8521, 5.0440, 21.0830)
Luminance	0.0505 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143D80 #805714

analogous

#147380 #143D80 #211480

triadic

#143D80 #80143D #3D8014

tetradic

#143D80 #801473 #805714 #148021

square

#143D80 #801473 #805714 #148021

split-complementary

#143D80 #802114 #738014

monochromatic

#040D1A #0C244B #143D80 #1C56B5 #3072DF

Accessibility & contrast

On white

10.45

#143D80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#143D80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143D80

10.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143D80	#FFFFFF	#000000	##FFFFFF
##143D80	1.00	10.45	2.01	10.45
#FFFFFF	10.45	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#124582

Deuteranopia (green-blind)

#003B7F

Tritanopia (blue-blind)

#004D58

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #143d80;
/* rgb */ color: rgb(20, 61, 128);
/* oklch */ color: oklch(37.4% 0.122 259.9);

Tailwind

colors: {
  custom: {
    50: '#6671a5',
    500: '#143d80',
    950: '#000000',
  },
}

SCSS

$custom: #143d80;
$custom-light: #6671a5;
$custom-dark: #000000;

JSON

{
  "hex": "#143d80",
  "rgb": {
    "r": 20,
    "g": 61,
    "b": 128
  },
  "hsl": {
    "h": 217.222,
    "s": 72.973,
    "l": 29.02
  },
  "oklch": {
    "l": 0.37362,
    "c": 0.12229,
    "h": 259.9
  },
  "luminance": 0.05045
}

Semantic roles & 50–950 ramp

primary

#143D80

secondary

#B5873B

accent

#AA38F0

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #143D80

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

Preview Lab → · Contrast checker → · Palette generator →