#143B8D#143B8D

#143B8D is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.0% C 0.143 H 262.6°. Best body text is #FFFFFF at 10.29:1 contrast (WCAG AA passes).

Color values

HEX	#143B8D
RGB	rgb(20, 59, 141)
HSL	hsl(221, 75%, 32%)
HSV	hsv(221, 86%, 55%)
CMYK	cmyk(85.8%, 58.2%, 0%, 44.7%)
CIE-LAB	lab(27.29, 19.50, -49.19)
CIE-LCH	lch(27.29, 52.92, 291.63°)
OKLab	oklab(38.01% -0.0185 -0.1421)
OKLCH	oklch(38.01% 0.143 262.6)
XYZ	xyz(6.6584, 5.1989, 25.8467)
Luminance	0.0520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143B8D #8D6614

analogous

#14788D #143B8D #2A148D

triadic

#143B8D #8D143B #3B8D14

tetradic

#143B8D #8D1478 #8D6614 #148D2A

square

#143B8D #8D1478 #8D6614 #148D2A

split-complementary

#143B8D #8D2A14 #788D14

monochromatic

#050E22 #0C2557 #143B8D #1C51C3 #396FE3

Accessibility & contrast

On white

10.29

#143B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#143B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143B8D

10.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143B8D	#FFFFFF	#000000	##FFFFFF
##143B8D	1.00	10.29	2.04	10.29
#FFFFFF	10.29	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004690

Deuteranopia (green-blind)

#003B8B

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #143b8d;
/* rgb */ color: rgb(20, 59, 141);
/* oklch */ color: oklch(38.0% 0.143 262.6);

Tailwind

colors: {
  custom: {
    50: '#6970af',
    500: '#143b8d',
    950: '#000000',
  },
}

SCSS

$custom: #143b8d;
$custom-light: #6970af;
$custom-dark: #000000;

JSON

{
  "hex": "#143b8d",
  "rgb": {
    "r": 20,
    "g": 59,
    "b": 141
  },
  "hsl": {
    "h": 220.661,
    "s": 75.155,
    "l": 31.569
  },
  "oklch": {
    "l": 0.38014,
    "c": 0.14335,
    "h": 262.6
  },
  "luminance": 0.052
}

Semantic roles & 50–950 ramp

primary

#143B8D

secondary

#C1963C

accent

#B536F2

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #143B8D

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

Preview Lab → · Contrast checker → · Palette generator →