#143B66#143B66

#143B66 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.9% C 0.087 H 253.4°. Best body text is #FFFFFF at 11.37:1 contrast (WCAG AA passes).

Color values

HEX#143B66
RGBrgb(20, 59, 102)
HSLhsl(211, 67%, 24%)
HSVhsv(211, 80%, 40%)
CMYKcmyk(80.4%, 42.2%, 0%, 60%)
CIE-LABlab(24.44, 3.18, -29.17)
CIE-LCHlch(24.44, 29.34, 276.21°)
OKLaboklab(34.91% -0.0248 -0.0833)
OKLCHoklch(34.91% 0.087 253.4)
XYZxyz(4.2498, 4.2355, 13.1613)
Luminance0.0424 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#143B66 #663F14
analogous
#146466 #143B66 #161466
triadic
#143B66 #66143B #3B6614
tetradic
#143B66 #661464 #663F14 #146616
square
#143B66 #661464 #663F14 #146616
split-complementary
#143B66 #661614 #646614
monochromatic
#050F1A #0A1D33 #143B66 #1E5999 #2876CC

Accessibility & contrast

On white

11.37
#143B66 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.85
#143B66 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143B66
11.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##143B66#FFFFFF#000000##FFFFFF
##143B661.0011.371.8511.37
#FFFFFF11.371.0021.001.00
#0000001.8521.001.0021.00
##FFFFFF11.371.0021.001.00

Color blindness preview

Protanopia (red-blind)
#273E68
Deuteranopia (green-blind)
#193765
Tritanopia (blue-blind)
#00454B
Achromatopsia (no color)
#3A3A3A

Design tokens & code

CSS
--color: #143b66;
/* rgb */ color: rgb(20, 59, 102);
/* oklch */ color: oklch(34.9% 0.087 253.4);
Tailwind
colors: {
  custom: {
    50: '#5f7092',
    500: '#143b66',
    950: '#000000',
  },
}
SCSS
$custom: #143b66;
$custom-light: #5f7092;
$custom-dark: #000000;
JSON
{
  "hex": "#143b66",
  "rgb": {
    "r": 20,
    "g": 59,
    "b": 102
  },
  "hsl": {
    "h": 211.463,
    "s": 67.213,
    "l": 23.922
  },
  "oklch": {
    "l": 0.34912,
    "c": 0.0869,
    "h": 253.4
  },
  "luminance": 0.04236
}

Semantic roles & 50–950 ramp

primary
#143B66
secondary
#9D6D39
accent
#983EEA
background
#F5F6F9
surface
#EAECF1
border
#C6C7CB
text
#05070D
muted
#797A7E

Preview Lab

Preview with #143B66

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

Preview Lab → · Contrast checker → · Palette generator →

#143B66 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva