#143F7F#143F7F

#143F7F is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.7% C 0.118 H 258.7°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#143F7F
RGB	rgb(20, 63, 127)
HSL	hsl(216, 73%, 29%)
HSV	hsv(216, 84%, 50%)
CMYK	cmyk(84.3%, 50.4%, 0%, 50.2%)
CIE-LAB	lab(27.39, 10.88, -40.32)
CIE-LCH	lch(27.39, 41.76, 285.10°)
OKLab	oklab(37.75% -0.0231 -0.116)
OKLCH	oklch(37.75% 0.118 258.7)
XYZ	xyz(5.8954, 5.2353, 20.7744)
Luminance	0.0524 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143F7F #7F5414

analogous

#14757F #143F7F #1F147F

triadic

#143F7F #7F143F #3F7F14

tetradic

#143F7F #7F1475 #7F5414 #147F1F

square

#143F7F #7F1475 #7F5414 #147F1F

split-complementary

#143F7F #7F1F14 #757F14

monochromatic

#040D1A #0C254A #143F7F #1C59B4 #2F76DE

Accessibility & contrast

On white

10.26

#143F7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#143F7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143F7F

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143F7F	#FFFFFF	#000000	##FFFFFF
##143F7F	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)

#194681

Deuteranopia (green-blind)

#003C7E

Tritanopia (blue-blind)

#004E59

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #143f7f;
/* rgb */ color: rgb(20, 63, 127);
/* oklch */ color: oklch(37.7% 0.118 258.7);

Tailwind

colors: {
  custom: {
    50: '#6573a5',
    500: '#143f7f',
    950: '#000000',
  },
}

SCSS

$custom: #143f7f;
$custom-light: #6573a5;
$custom-dark: #000000;

JSON

{
  "hex": "#143f7f",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 127
  },
  "hsl": {
    "h": 215.888,
    "s": 72.789,
    "l": 28.824
  },
  "oklch": {
    "l": 0.37749,
    "c": 0.11826,
    "h": 258.7
  },
  "luminance": 0.05236
}

Semantic roles & 50–950 ramp

primary

#143F7F

secondary

#B4833B

accent

#A638EF

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #143F7F

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

Preview Lab → · Contrast checker → · Palette generator →