#143D57#143D57

#143D57 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.5% C 0.064 H 240.3°. Best body text is #FFFFFF at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#143D57
RGB	rgb(20, 61, 87)
HSL	hsl(203, 63%, 21%)
HSV	hsv(203, 77%, 34%)
CMYK	cmyk(77%, 29.9%, 0%, 65.9%)
CIE-LAB	lab(24.24, -4.34, -19.72)
CIE-LCH	lch(24.24, 20.19, 257.60°)
OKLab	oklab(34.47% -0.0317 -0.0557)
OKLCH	oklch(34.47% 0.064 240.3)
XYZ	xyz(3.6769, 4.1739, 9.6268)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143D57 #572E14

analogous

#14574F #143D57 #141B57

triadic

#143D57 #57143D #3D5714

tetradic

#143D57 #4F1457 #572E14 #1B5714

square

#143D57 #4F1457 #572E14 #1B5714

split-complementary

#143D57 #57141B #574F14

monochromatic

#061119 #091A25 #143D57 #1F6089 #2B83BB

Accessibility & contrast

On white

11.45

#143D57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#143D57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143D57

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143D57	#FFFFFF	#000000	##FFFFFF
##143D57	1.00	11.45	1.83	11.45
#FFFFFF	11.45	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#313D58

Deuteranopia (green-blind)

#283757

Tritanopia (blue-blind)

#004346

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #143d57;
/* rgb */ color: rgb(20, 61, 87);
/* oklch */ color: oklch(34.5% 0.064 240.3);

Tailwind

colors: {
  custom: {
    50: '#5c7286',
    500: '#143d57',
    950: '#000000',
  },
}

SCSS

$custom: #143d57;
$custom-light: #5c7286;
$custom-dark: #000000;

JSON

{
  "hex": "#143d57",
  "rgb": {
    "r": 20,
    "g": 61,
    "b": 87
  },
  "hsl": {
    "h": 203.284,
    "s": 62.617,
    "l": 20.98
  },
  "oklch": {
    "l": 0.34474,
    "c": 0.06407,
    "h": 240.3
  },
  "luminance": 0.04174
}

Semantic roles & 50–950 ramp

primary

#143D57

secondary

#8F5A38

accent

#8242E6

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #143D57

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

Preview Lab → · Contrast checker → · Palette generator →