#143C5B#143C5B

#143C5B is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.4% C 0.070 H 245.4°. Best body text is #FFFFFF at 11.49:1 contrast (WCAG AA passes).

Color values

HEX	#143C5B
RGB	rgb(20, 60, 91)
HSL	hsl(206, 64%, 22%)
HSV	hsv(206, 78%, 36%)
CMYK	cmyk(78%, 34.1%, 0%, 64.3%)
CIE-LAB	lab(24.11, -2.05, -22.54)
CIE-LCH	lch(24.11, 22.63, 264.79°)
OKLab	oklab(34.45% -0.0292 -0.0638)
OKLCH	oklch(34.45% 0.07 245.4)
XYZ	xyz(3.7920, 4.1353, 10.4939)
Luminance	0.0414 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143C5B #5B3314

analogous

#145B57 #143C5B #14195B

triadic

#143C5B #5B143C #3C5B14

tetradic

#143C5B #57145B #5B3314 #195B14

square

#143C5B #57145B #5B3314 #195B14

split-complementary

#143C5B #5B1419 #5B5714

monochromatic

#061119 #091B29 #143C5B #1F5D8D #2A7EBF

Accessibility & contrast

On white

11.49

#143C5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#143C5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143C5B

11.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143C5B	#FFFFFF	#000000	##FFFFFF
##143C5B	1.00	11.49	1.83	11.49
#FFFFFF	11.49	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3D5C

Deuteranopia (green-blind)

#24365A

Tritanopia (blue-blind)

#004347

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #143c5b;
/* rgb */ color: rgb(20, 60, 91);
/* oklch */ color: oklch(34.4% 0.070 245.4);

Tailwind

colors: {
  custom: {
    50: '#5c7189',
    500: '#143c5b',
    950: '#000000',
  },
}

SCSS

$custom: #143c5b;
$custom-light: #5c7189;
$custom-dark: #000000;

JSON

{
  "hex": "#143c5b",
  "rgb": {
    "r": 20,
    "g": 60,
    "b": 91
  },
  "hsl": {
    "h": 206.197,
    "s": 63.964,
    "l": 21.765
  },
  "oklch": {
    "l": 0.34447,
    "c": 0.0702,
    "h": 245.4
  },
  "luminance": 0.04136
}

Semantic roles & 50–950 ramp

primary

#143C5B

secondary

#936038

accent

#8941E7

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070B

muted

#797A7C

Preview Lab

Preview with #143C5B

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

Preview Lab → · Contrast checker → · Palette generator →