#143B57#143B57

#143B57 is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 33.9% C 0.066 H 243.4°. Best body text is #FFFFFF at 11.71:1 contrast (WCAG AA passes).

Color values

HEX	#143B57
RGB	rgb(20, 59, 87)
HSL	hsl(205, 63%, 21%)
HSV	hsv(205, 77%, 34%)
CMYK	cmyk(77%, 32.2%, 0%, 65.9%)
CIE-LAB	lab(23.55, -3.01, -20.80)
CIE-LCH	lch(23.55, 21.01, 261.77°)
OKLab	oklab(33.93% -0.0295 -0.0588)
OKLCH	oklch(33.93% 0.066 243.4)
XYZ	xyz(3.5721, 3.9644, 9.5919)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143B57 #573014

analogous

#145751 #143B57 #141957

triadic

#143B57 #57143B #3B5714

tetradic

#143B57 #511457 #573014 #195714

square

#143B57 #511457 #573014 #195714

split-complementary

#143B57 #571419 #575114

monochromatic

#061119 #091925 #143B57 #1F5D89 #2B7EBB

Accessibility & contrast

On white

11.71

#143B57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#143B57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143B57

11.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143B57	#FFFFFF	#000000	##FFFFFF
##143B57	1.00	11.71	1.79	11.71
#FFFFFF	11.71	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3C58

Deuteranopia (green-blind)

#253556

Tritanopia (blue-blind)

#004245

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #143b57;
/* rgb */ color: rgb(20, 59, 87);
/* oklch */ color: oklch(33.9% 0.066 243.4);

Tailwind

colors: {
  custom: {
    50: '#5c7086',
    500: '#143b57',
    950: '#000000',
  },
}

SCSS

$custom: #143b57;
$custom-light: #5c7086;
$custom-dark: #000000;

JSON

{
  "hex": "#143b57",
  "rgb": {
    "r": 20,
    "g": 59,
    "b": 87
  },
  "hsl": {
    "h": 205.075,
    "s": 62.617,
    "l": 20.98
  },
  "oklch": {
    "l": 0.33932,
    "c": 0.06577,
    "h": 243.4
  },
  "luminance": 0.03965
}

Semantic roles & 50–950 ramp

primary

#143B57

secondary

#8F5C38

accent

#8642E6

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #143B57

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

Preview Lab → · Contrast checker → · Palette generator →