#143B8E#143B8E

#143B8E is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.1% C 0.145 H 262.7°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#143B8E
RGB	rgb(20, 59, 142)
HSL	hsl(221, 75%, 32%)
HSV	hsv(221, 86%, 56%)
CMYK	cmyk(85.9%, 58.5%, 0%, 44.3%)
CIE-LAB	lab(27.38, 19.92, -49.67)
CIE-LCH	lch(27.38, 53.52, 291.85°)
OKLab	oklab(38.1% -0.0185 -0.1436)
OKLCH	oklch(38.1% 0.145 262.7)
XYZ	xyz(6.7332, 5.2288, 26.2403)
Luminance	0.0523 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143B8E #8E6714

analogous

#14788E #143B8E #2A148E

triadic

#143B8E #8E143B #3B8E14

tetradic

#143B8E #8E1478 #8E6714 #148E2A

square

#143B8E #8E1478 #8E6714 #148E2A

split-complementary

#143B8E #8E2A14 #788E14

monochromatic

#050E23 #0C2558 #143B8E #1C51C4 #3970E3

Accessibility & contrast

On white

10.26

#143B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#143B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143B8E

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143B8E	#FFFFFF	#000000	##FFFFFF
##143B8E	1.00	10.26	2.05	10.26
#FFFFFF	10.26	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004691

Deuteranopia (green-blind)

#003B8C

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #143b8e;
/* rgb */ color: rgb(20, 59, 142);
/* oklch */ color: oklch(38.1% 0.145 262.7);

Tailwind

colors: {
  custom: {
    50: '#6a70b0',
    500: '#143b8e',
    950: '#000000',
  },
}

SCSS

$custom: #143b8e;
$custom-light: #6a70b0;
$custom-dark: #000000;

JSON

{
  "hex": "#143b8e",
  "rgb": {
    "r": 20,
    "g": 59,
    "b": 142
  },
  "hsl": {
    "h": 220.82,
    "s": 75.309,
    "l": 31.765
  },
  "oklch": {
    "l": 0.38103,
    "c": 0.14475,
    "h": 262.7
  },
  "luminance": 0.0523
}

Semantic roles & 50–950 ramp

primary

#143B8E

secondary

#C2973C

accent

#B636F2

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #143B8E

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

Preview Lab → · Contrast checker → · Palette generator →