#143C55#143C55

#143C55 is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.1% C 0.062 H 239.8°. Best body text is #FFFFFF at 11.62:1 contrast (WCAG AA passes).

Color values

HEX	#143C55
RGB	rgb(20, 60, 85)
HSL	hsl(203, 62%, 21%)
HSV	hsv(203, 76%, 33%)
CMYK	cmyk(76.5%, 29.4%, 0%, 66.7%)
CIE-LAB	lab(23.79, -4.48, -19.11)
CIE-LCH	lch(23.79, 19.63, 256.82°)
OKLab	oklab(34.08% -0.0313 -0.0539)
OKLCH	oklch(34.08% 0.062 239.8)
XYZ	xyz(3.5434, 4.0359, 9.1848)
Luminance	0.0404 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143C55 #552D14

analogous

#14554D #143C55 #141B55

triadic

#143C55 #55143C #3C5514

tetradic

#143C55 #4D1455 #552D14 #1B5514

square

#143C55 #4D1455 #552D14 #1B5514

split-complementary

#143C55 #55141B #554D14

monochromatic

#061119 #081923 #143C55 #205F87 #2B82B8

Accessibility & contrast

On white

11.62

#143C55 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#143C55 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143C55

11.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143C55	#FFFFFF	#000000	##FFFFFF
##143C55	1.00	11.62	1.81	11.62
#FFFFFF	11.62	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303C56

Deuteranopia (green-blind)

#273655

Tritanopia (blue-blind)

#004245

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #143c55;
/* rgb */ color: rgb(20, 60, 85);
/* oklch */ color: oklch(34.1% 0.062 239.8);

Tailwind

colors: {
  custom: {
    50: '#5b7185',
    500: '#143c55',
    950: '#000000',
  },
}

SCSS

$custom: #143c55;
$custom-light: #5b7185;
$custom-dark: #000000;

JSON

{
  "hex": "#143c55",
  "rgb": {
    "r": 20,
    "g": 60,
    "b": 85
  },
  "hsl": {
    "h": 203.077,
    "s": 61.905,
    "l": 20.588
  },
  "oklch": {
    "l": 0.34084,
    "c": 0.06235,
    "h": 239.8
  },
  "luminance": 0.04036
}

Semantic roles & 50–950 ramp

primary

#143C55

secondary

#8D5938

accent

#8143E5

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #143C55

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

Preview Lab → · Contrast checker → · Palette generator →