#143F55#143F55

#143F55 is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 34.9% C 0.060 H 234.7°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#143F55
RGB	rgb(20, 63, 85)
HSL	hsl(200, 62%, 21%)
HSV	hsv(200, 76%, 33%)
CMYK	cmyk(76.5%, 25.9%, 0%, 66.7%)
CIE-LAB	lab(24.83, -6.44, -17.50)
CIE-LCH	lch(24.83, 18.64, 249.80°)
OKLab	oklab(34.91% -0.0348 -0.0492)
OKLCH	oklch(34.91% 0.06 234.7)
XYZ	xyz(3.7050, 4.3592, 9.2387)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143F55 #552A14

analogous

#14554A #143F55 #141E55

triadic

#143F55 #55143F #3F5514

tetradic

#143F55 #4A1455 #552A14 #1E5514

square

#143F55 #4A1455 #552A14 #1E5514

split-complementary

#143F55 #55141E #554A14

monochromatic

#061219 #081A23 #143F55 #206487 #2B88B8

Accessibility & contrast

On white

11.22

#143F55 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#143F55 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143F55

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143F55	#FFFFFF	#000000	##FFFFFF
##143F55	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343E56

Deuteranopia (green-blind)

#2B3855

Tritanopia (blue-blind)

#004546

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #143f55;
/* rgb */ color: rgb(20, 63, 85);
/* oklch */ color: oklch(34.9% 0.060 234.7);

Tailwind

colors: {
  custom: {
    50: '#5b7485',
    500: '#143f55',
    950: '#000000',
  },
}

SCSS

$custom: #143f55;
$custom-light: #5b7485;
$custom-dark: #000000;

JSON

{
  "hex": "#143f55",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 85
  },
  "hsl": {
    "h": 200.308,
    "s": 61.905,
    "l": 20.588
  },
  "oklch": {
    "l": 0.34907,
    "c": 0.06027,
    "h": 234.7
  },
  "luminance": 0.0436
}

Semantic roles & 50–950 ramp

primary

#143F55

secondary

#8D5538

accent

#7A43E5

background

#F5F7F8

surface

#E9EDEF

border

#C5C8CA

text

#04080B

muted

#797B7C

Preview Lab

Preview with #143F55

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

Preview Lab → · Contrast checker → · Palette generator →