#143B80#143B80

#143B80 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.9% C 0.125 H 260.9°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX	#143B80
RGB	rgb(20, 59, 128)
HSL	hsl(218, 73%, 29%)
HSV	hsv(218, 84%, 50%)
CMYK	cmyk(84.4%, 53.9%, 0%, 49.8%)
CIE-LAB	lab(26.26, 14.10, -42.78)
CIE-LCH	lch(26.26, 45.05, 288.25°)
OKLab	oklab(36.9% -0.0198 -0.1233)
OKLCH	oklch(36.9% 0.125 260.9)
XYZ	xyz(5.7473, 4.8345, 21.0481)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143B80 #805914

analogous

#147180 #143B80 #231480

triadic

#143B80 #80143B #3B8014

tetradic

#143B80 #801471 #805914 #148023

square

#143B80 #801471 #805914 #148023

split-complementary

#143B80 #802314 #718014

monochromatic

#040C1A #0C234B #143B80 #1C53B5 #306FDF

Accessibility & contrast

On white

10.68

#143B80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#143B80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143B80

10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143B80	#FFFFFF	#000000	##FFFFFF
##143B80	1.00	10.68	1.97	10.68
#FFFFFF	10.68	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#094382

Deuteranopia (green-blind)

#00397F

Tritanopia (blue-blind)

#004C57

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #143b80;
/* rgb */ color: rgb(20, 59, 128);
/* oklch */ color: oklch(36.9% 0.125 260.9);

Tailwind

colors: {
  custom: {
    50: '#6670a5',
    500: '#143b80',
    950: '#000000',
  },
}

SCSS

$custom: #143b80;
$custom-light: #6670a5;
$custom-dark: #000000;

JSON

{
  "hex": "#143b80",
  "rgb": {
    "r": 20,
    "g": 59,
    "b": 128
  },
  "hsl": {
    "h": 218.333,
    "s": 72.973,
    "l": 29.02
  },
  "oklch": {
    "l": 0.36902,
    "c": 0.1249,
    "h": 260.9
  },
  "luminance": 0.04835
}

Semantic roles & 50–950 ramp

primary

#143B80

secondary

#B5893B

accent

#AD38F0

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #143B80

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

Preview Lab → · Contrast checker → · Palette generator →