#143F5A#143F5A

#143F5A is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.2% C 0.066 H 240.2°. Best body text is #FFFFFF at 11.12:1 contrast (WCAG AA passes).

Color values

HEX	#143F5A
RGB	rgb(20, 63, 90)
HSL	hsl(203, 64%, 22%)
HSV	hsv(203, 78%, 35%)
CMYK	cmyk(77.8%, 30%, 0%, 64.7%)
CIE-LAB	lab(25.08, -4.46, -20.37)
CIE-LCH	lch(25.08, 20.85, 257.66°)
OKLab	oklab(35.19% -0.0329 -0.0575)
OKLCH	oklch(35.19% 0.066 240.2)
XYZ	xyz(3.9107, 4.4415, 10.3221)
Luminance	0.0444 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143F5A #5A2F14

analogous

#145A52 #143F5A #141C5A

triadic

#143F5A #5A143F #3F5A14

tetradic

#143F5A #52145A #5A2F14 #1C5A14

square

#143F5A #52145A #5A2F14 #1C5A14

split-complementary

#143F5A #5A141C #5A5214

monochromatic

#061219 #091C28 #143F5A #1F628C #2A85BE

Accessibility & contrast

On white

11.12

#143F5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#143F5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143F5A

11.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143F5A	#FFFFFF	#000000	##FFFFFF
##143F5A	1.00	11.12	1.89	11.12
#FFFFFF	11.12	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#323F5B

Deuteranopia (green-blind)

#29395A

Tritanopia (blue-blind)

#004648

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #143f5a;
/* rgb */ color: rgb(20, 63, 90);
/* oklch */ color: oklch(35.2% 0.066 240.2);

Tailwind

colors: {
  custom: {
    50: '#5c7388',
    500: '#143f5a',
    950: '#000000',
  },
}

SCSS

$custom: #143f5a;
$custom-light: #5c7388;
$custom-dark: #000000;

JSON

{
  "hex": "#143f5a",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 90
  },
  "hsl": {
    "h": 203.143,
    "s": 63.636,
    "l": 21.569
  },
  "oklch": {
    "l": 0.35193,
    "c": 0.06624,
    "h": 240.2
  },
  "luminance": 0.04442
}

Semantic roles & 50–950 ramp

primary

#143F5A

secondary

#925B38

accent

#8141E7

background

#F5F7F8

surface

#E9EDF0

border

#C5C8CB

text

#05080B

muted

#797B7C

Preview Lab

Preview with #143F5A

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

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