#143B8F#143B8F

#143B8F is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.2% C 0.146 H 262.8°. Best body text is #FFFFFF at 10.23:1 contrast (WCAG AA passes).

Color values

HEX	#143B8F
RGB	rgb(20, 59, 143)
HSL	hsl(221, 75%, 32%)
HSV	hsv(221, 86%, 56%)
CMYK	cmyk(86%, 58.7%, 0%, 43.9%)
CIE-LAB	lab(27.46, 20.33, -50.15)
CIE-LCH	lch(27.46, 54.12, 292.06°)
OKLab	oklab(38.19% -0.0184 -0.145)
OKLCH	oklch(38.19% 0.146 262.8)
XYZ	xyz(6.8086, 5.2590, 26.6375)
Luminance	0.0526 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143B8F #8F6814

analogous

#14788F #143B8F #2B148F

triadic

#143B8F #8F143B #3B8F14

tetradic

#143B8F #8F1478 #8F6814 #148F2B

square

#143B8F #8F1478 #8F6814 #148F2B

split-complementary

#143B8F #8F2B14 #788F14

monochromatic

#050F24 #0C2559 #143B8F #1C51C5 #3A70E3

Accessibility & contrast

On white

10.23

#143B8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#143B8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143B8F

10.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143B8F	#FFFFFF	#000000	##FFFFFF
##143B8F	1.00	10.23	2.05	10.23
#FFFFFF	10.23	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004792

Deuteranopia (green-blind)

#003B8D

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #143b8f;
/* rgb */ color: rgb(20, 59, 143);
/* oklch */ color: oklch(38.2% 0.146 262.8);

Tailwind

colors: {
  custom: {
    50: '#6a70b1',
    500: '#143b8f',
    950: '#000000',
  },
}

SCSS

$custom: #143b8f;
$custom-light: #6a70b1;
$custom-dark: #000000;

JSON

{
  "hex": "#143b8f",
  "rgb": {
    "r": 20,
    "g": 59,
    "b": 143
  },
  "hsl": {
    "h": 220.976,
    "s": 75.46,
    "l": 31.961
  },
  "oklch": {
    "l": 0.38192,
    "c": 0.14614,
    "h": 262.8
  },
  "luminance": 0.0526
}

Semantic roles & 50–950 ramp

primary

#143B8F

secondary

#C3983C

accent

#B636F2

background

#F6F6FB

surface

#ECECF6

border

#C7C7D0

text

#080711

muted

#7A7A80

Preview Lab

Preview with #143B8F

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

Preview Lab → · Contrast checker → · Palette generator →