#143F5D#143F5D

#143F5D is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.4% C 0.070 H 243.0°. Best body text is #FFFFFF at 11.06:1 contrast (WCAG AA passes).

Color values

HEX	#143F5D
RGB	rgb(20, 63, 93)
HSL	hsl(205, 65%, 22%)
HSV	hsv(205, 78%, 36%)
CMYK	cmyk(78.5%, 32.3%, 0%, 63.5%)
CIE-LAB	lab(25.24, -3.25, -22.07)
CIE-LCH	lch(25.24, 22.31, 261.62°)
OKLab	oklab(35.37% -0.0318 -0.0624)
OKLCH	oklch(35.37% 0.07 243)
XYZ	xyz(4.0410, 4.4936, 11.0082)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143F5D #5D3214

analogous

#145D57 #143F5D #141A5D

triadic

#143F5D #5D143F #3F5D14

tetradic

#143F5D #57145D #5D3214 #1A5D14

square

#143F5D #57145D #5D3214 #1A5D14

split-complementary

#143F5D #5D141A #5D5714

monochromatic

#051119 #091D2B #143F5D #1F618F #2A83C2

Accessibility & contrast

On white

11.06

#143F5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#143F5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143F5D

11.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143F5D	#FFFFFF	#000000	##FFFFFF
##143F5D	1.00	11.06	1.90	11.06
#FFFFFF	11.06	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#31405E

Deuteranopia (green-blind)

#27395C

Tritanopia (blue-blind)

#00464A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #143f5d;
/* rgb */ color: rgb(20, 63, 93);
/* oklch */ color: oklch(35.4% 0.070 243.0);

Tailwind

colors: {
  custom: {
    50: '#5d738b',
    500: '#143f5d',
    950: '#000000',
  },
}

SCSS

$custom: #143f5d;
$custom-light: #5d738b;
$custom-dark: #000000;

JSON

{
  "hex": "#143f5d",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 93
  },
  "hsl": {
    "h": 204.658,
    "s": 64.602,
    "l": 22.157
  },
  "oklch": {
    "l": 0.35373,
    "c": 0.07008,
    "h": 243
  },
  "luminance": 0.04494
}

Semantic roles & 50–950 ramp

primary

#143F5D

secondary

#955E38

accent

#8540E8

background

#F5F7F8

surface

#E9EDF0

border

#C5C8CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #143F5D

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

Preview Lab → · Contrast checker → · Palette generator →