#143C5B#143C5B

#143C5B is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.4% C 0.070 H 245.4°. Best body text is #FFFFFF at 11.49:1 contrast (WCAG AA passes).

Color values

HEX#143C5B
RGBrgb(20, 60, 91)
HSLhsl(206, 64%, 22%)
HSVhsv(206, 78%, 36%)
CMYKcmyk(78%, 34.1%, 0%, 64.3%)
CIE-LABlab(24.11, -2.05, -22.54)
CIE-LCHlch(24.11, 22.63, 264.79°)
OKLaboklab(34.45% -0.0292 -0.0638)
OKLCHoklch(34.45% 0.07 245.4)
XYZxyz(3.7920, 4.1353, 10.4939)
Luminance0.0414 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#143C5B #5B3314
analogous
#145B57 #143C5B #14195B
triadic
#143C5B #5B143C #3C5B14
tetradic
#143C5B #57145B #5B3314 #195B14
square
#143C5B #57145B #5B3314 #195B14
split-complementary
#143C5B #5B1419 #5B5714
monochromatic
#061119 #091B29 #143C5B #1F5D8D #2A7EBF

Accessibility & contrast

On white

11.49
#143C5B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.83
#143C5B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143C5B
11.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##143C5B#FFFFFF#000000##FFFFFF
##143C5B1.0011.491.8311.49
#FFFFFF11.491.0021.001.00
#0000001.8321.001.0021.00
##FFFFFF11.491.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2E3D5C
Deuteranopia (green-blind)
#24365A
Tritanopia (blue-blind)
#004347
Achromatopsia (no color)
#393939

Design tokens & code

CSS
--color: #143c5b;
/* rgb */ color: rgb(20, 60, 91);
/* oklch */ color: oklch(34.4% 0.070 245.4);
Tailwind
colors: {
  custom: {
    50: '#5c7189',
    500: '#143c5b',
    950: '#000000',
  },
}
SCSS
$custom: #143c5b;
$custom-light: #5c7189;
$custom-dark: #000000;
JSON
{
  "hex": "#143c5b",
  "rgb": {
    "r": 20,
    "g": 60,
    "b": 91
  },
  "hsl": {
    "h": 206.197,
    "s": 63.964,
    "l": 21.765
  },
  "oklch": {
    "l": 0.34447,
    "c": 0.0702,
    "h": 245.4
  },
  "luminance": 0.04136
}

Semantic roles & 50–950 ramp

primary
#143C5B
secondary
#936038
accent
#8941E7
background
#F5F6F8
surface
#E9ECF0
border
#C5C7CB
text
#05070B
muted
#797A7C

Preview Lab

Preview with #143C5B

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

Preview Lab → · Contrast checker → · Palette generator →

#143C5B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva