#143D5B#143D5B

#143D5B is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.7% C 0.069 H 244.1°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX#143D5B
RGBrgb(20, 61, 91)
HSLhsl(205, 64%, 22%)
HSVhsv(205, 78%, 36%)
CMYKcmyk(78%, 33%, 0%, 64.3%)
CIE-LABlab(24.45, -2.73, -22.00)
CIE-LCHlch(24.45, 22.17, 262.93°)
OKLaboklab(34.72% -0.0303 -0.0623)
OKLCHoklch(34.72% 0.069 244.1)
XYZxyz(3.8448, 4.2411, 10.5115)
Luminance0.0424 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#143D5B #5B3214
analogous
#145B56 #143D5B #141A5B
triadic
#143D5B #5B143D #3D5B14
tetradic
#143D5B #56145B #5B3214 #1A5B14
square
#143D5B #56145B #5B3214 #1A5B14
split-complementary
#143D5B #5B141A #5B5614
monochromatic
#061119 #091B29 #143D5B #1F5F8D #2A80BF

Accessibility & contrast

On white

11.36
#143D5B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.85
#143D5B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143D5B
11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##143D5B#FFFFFF#000000##FFFFFF
##143D5B1.0011.361.8511.36
#FFFFFF11.361.0021.001.00
#0000001.8521.001.0021.00
##FFFFFF11.361.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2F3E5C
Deuteranopia (green-blind)
#25375A
Tritanopia (blue-blind)
#004448
Achromatopsia (no color)
#3A3A3A

Design tokens & code

CSS
--color: #143d5b;
/* rgb */ color: rgb(20, 61, 91);
/* oklch */ color: oklch(34.7% 0.069 244.1);
Tailwind
colors: {
  custom: {
    50: '#5c7289',
    500: '#143d5b',
    950: '#000000',
  },
}
SCSS
$custom: #143d5b;
$custom-light: #5c7289;
$custom-dark: #000000;
JSON
{
  "hex": "#143d5b",
  "rgb": {
    "r": 20,
    "g": 61,
    "b": 91
  },
  "hsl": {
    "h": 205.352,
    "s": 63.964,
    "l": 21.765
  },
  "oklch": {
    "l": 0.34715,
    "c": 0.06926,
    "h": 244.1
  },
  "luminance": 0.04242
}

Semantic roles & 50–950 ramp

primary
#143D5B
secondary
#935E38
accent
#8741E7
background
#F5F6F8
surface
#E9ECF0
border
#C5C7CB
text
#05070B
muted
#797A7C

Preview Lab

Preview with #143D5B

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

Preview Lab → · Contrast checker → · Palette generator →

#143D5B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva