#143F7D#143F7D

#143F7D is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.6% C 0.115 H 258.3°. Best body text is #FFFFFF at 10.31:1 contrast (WCAG AA passes).

Color values

HEX	#143F7D
RGB	rgb(20, 63, 125)
HSL	hsl(215, 72%, 28%)
HSV	hsv(215, 84%, 49%)
CMYK	cmyk(84%, 49.6%, 0%, 51%)
CIE-LAB	lab(27.25, 10.04, -39.30)
CIE-LCH	lch(27.25, 40.56, 284.33°)
OKLab	oklab(37.59% -0.0234 -0.113)
OKLCH	oklch(37.59% 0.115 258.3)
XYZ	xyz(5.7663, 5.1837, 20.0947)
Luminance	0.0518 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143F7D #7D5214

analogous

#14737D #143F7D #1E147D

triadic

#143F7D #7D143F #3F7D14

tetradic

#143F7D #7D1473 #7D5214 #147D1E

square

#143F7D #7D1473 #7D5214 #147D1E

split-complementary

#143F7D #7D1E14 #737D14

monochromatic

#040D1A #0C2448 #143F7D #1C5AB2 #2E76DE

Accessibility & contrast

On white

10.31

#143F7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#143F7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143F7D

10.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143F7D	#FFFFFF	#000000	##FFFFFF
##143F7D	1.00	10.31	2.04	10.31
#FFFFFF	10.31	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C457F

Deuteranopia (green-blind)

#003C7C

Tritanopia (blue-blind)

#004E58

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #143f7d;
/* rgb */ color: rgb(20, 63, 125);
/* oklch */ color: oklch(37.6% 0.115 258.3);

Tailwind

colors: {
  custom: {
    50: '#6573a3',
    500: '#143f7d',
    950: '#000000',
  },
}

SCSS

$custom: #143f7d;
$custom-light: #6573a3;
$custom-dark: #000000;

JSON

{
  "hex": "#143f7d",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 125
  },
  "hsl": {
    "h": 215.429,
    "s": 72.414,
    "l": 28.431
  },
  "oklch": {
    "l": 0.37593,
    "c": 0.11538,
    "h": 258.3
  },
  "luminance": 0.05184
}

Semantic roles & 50–950 ramp

primary

#143F7D

secondary

#B2813A

accent

#A439EF

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06080F

muted

#7A7B7F

Preview Lab

Preview with #143F7D

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

Preview Lab → · Contrast checker → · Palette generator →