#143F7C#143F7C

#143F7C is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.5% C 0.114 H 258.0°. Best body text is #FFFFFF at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#143F7C
RGB	rgb(20, 63, 124)
HSL	hsl(215, 72%, 28%)
HSV	hsv(215, 84%, 49%)
CMYK	cmyk(83.9%, 49.2%, 0%, 51.4%)
CIE-LAB	lab(27.18, 9.62, -38.78)
CIE-LCH	lch(27.18, 39.96, 283.93°)
OKLab	oklab(37.52% -0.0236 -0.1115)
OKLCH	oklch(37.52% 0.114 258)
XYZ	xyz(5.7027, 5.1583, 19.7600)
Luminance	0.0516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143F7C #7C5114

analogous

#14737C #143F7C #1D147C

triadic

#143F7C #7C143F #3F7C14

tetradic

#143F7C #7C1473 #7C5114 #147C1D

square

#143F7C #7C1473 #7C5114 #147C1D

split-complementary

#143F7C #7C1D14 #737C14

monochromatic

#040D1A #0B2447 #143F7C #1D5AB1 #2D76DD

Accessibility & contrast

On white

10.34

#143F7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#143F7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143F7C

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143F7C	#FFFFFF	#000000	##FFFFFF
##143F7C	1.00	10.34	2.03	10.34
#FFFFFF	10.34	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D457E

Deuteranopia (green-blind)

#003C7B

Tritanopia (blue-blind)

#004E57

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #143f7c;
/* rgb */ color: rgb(20, 63, 124);
/* oklch */ color: oklch(37.5% 0.114 258.0);

Tailwind

colors: {
  custom: {
    50: '#6473a2',
    500: '#143f7c',
    950: '#000000',
  },
}

SCSS

$custom: #143f7c;
$custom-light: #6473a2;
$custom-dark: #000000;

JSON

{
  "hex": "#143f7c",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 124
  },
  "hsl": {
    "h": 215.192,
    "s": 72.222,
    "l": 28.235
  },
  "oklch": {
    "l": 0.37516,
    "c": 0.11394,
    "h": 258
  },
  "luminance": 0.05159
}

Semantic roles & 50–950 ramp

primary

#143F7C

secondary

#B2803A

accent

#A439EF

background

#F6F6FA

surface

#EBECF3

border

#C6C7CD

text

#06080F

muted

#7A7B7F

Preview Lab

Preview with #143F7C

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

Preview Lab → · Contrast checker → · Palette generator →