#143F66#143F66

#143F66 is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 35.9% C 0.082 H 249.5°. Best body text is #FFFFFF at 10.87:1 contrast (WCAG AA passes).

Color values

HEX	#143F66
RGB	rgb(20, 63, 102)
HSL	hsl(209, 67%, 24%)
HSV	hsv(209, 80%, 40%)
CMYK	cmyk(80.4%, 38.2%, 0%, 60%)
CIE-LAB	lab(25.75, 0.43, -27.08)
CIE-LCH	lch(25.75, 27.09, 270.91°)
OKLab	oklab(35.94% -0.0289 -0.0771)
OKLCH	oklch(35.94% 0.082 249.5)
XYZ	xyz(4.4634, 4.6625, 13.2325)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143F66 #663B14

analogous

#146664 #143F66 #141666

triadic

#143F66 #66143F #3F6614

tetradic

#143F66 #641466 #663B14 #166614

square

#143F66 #641466 #663B14 #166614

split-complementary

#143F66 #661416 #666414

monochromatic

#05101A #0A1F33 #143F66 #1E5F99 #287ECC

Accessibility & contrast

On white

10.87

#143F66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#143F66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143F66

10.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143F66	#FFFFFF	#000000	##FFFFFF
##143F66	1.00	10.87	1.93	10.87
#FFFFFF	10.87	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D4168

Deuteranopia (green-blind)

#213A65

Tritanopia (blue-blind)

#00484D

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #143f66;
/* rgb */ color: rgb(20, 63, 102);
/* oklch */ color: oklch(35.9% 0.082 249.5);

Tailwind

colors: {
  custom: {
    50: '#5f7392',
    500: '#143f66',
    950: '#000000',
  },
}

SCSS

$custom: #143f66;
$custom-light: #5f7392;
$custom-dark: #000000;

JSON

{
  "hex": "#143f66",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 102
  },
  "hsl": {
    "h": 208.537,
    "s": 67.213,
    "l": 23.922
  },
  "oklch": {
    "l": 0.35942,
    "c": 0.08231,
    "h": 249.5
  },
  "luminance": 0.04663
}

Semantic roles & 50–950 ramp

primary

#143F66

secondary

#9D6839

accent

#903EEA

background

#F5F6F9

surface

#EAECF1

border

#C6C7CB

text

#05080D

muted

#797B7E

Preview Lab

Preview with #143F66

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

Preview Lab → · Contrast checker → · Palette generator →