#143D5B#143D5B

#143D5B is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.7% C 0.069 H 244.1°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#143D5B
RGB	rgb(20, 61, 91)
HSL	hsl(205, 64%, 22%)
HSV	hsv(205, 78%, 36%)
CMYK	cmyk(78%, 33%, 0%, 64.3%)
CIE-LAB	lab(24.45, -2.73, -22.00)
CIE-LCH	lch(24.45, 22.17, 262.93°)
OKLab	oklab(34.72% -0.0303 -0.0623)
OKLCH	oklch(34.72% 0.069 244.1)
XYZ	xyz(3.8448, 4.2411, 10.5115)
Luminance	0.0424 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143D5B #5B3214

analogous

#145B56 #143D5B #141A5B

triadic

#143D5B #5B143D #3D5B14

tetradic

#143D5B #56145B #5B3214 #1A5B14

square

#143D5B #56145B #5B3214 #1A5B14

split-complementary

#143D5B #5B141A #5B5614

monochromatic

#061119 #091B29 #143D5B #1F5F8D #2A80BF

Accessibility & contrast

On white

11.36

#143D5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#143D5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143D5B

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143D5B	#FFFFFF	#000000	##FFFFFF
##143D5B	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F3E5C

Deuteranopia (green-blind)

#25375A

Tritanopia (blue-blind)

#004448

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #143d5b;
/* rgb */ color: rgb(20, 61, 91);
/* oklch */ color: oklch(34.7% 0.069 244.1);

Tailwind

colors: {
  custom: {
    50: '#5c7289',
    500: '#143d5b',
    950: '#000000',
  },
}

SCSS

$custom: #143d5b;
$custom-light: #5c7289;
$custom-dark: #000000;

JSON

{
  "hex": "#143d5b",
  "rgb": {
    "r": 20,
    "g": 61,
    "b": 91
  },
  "hsl": {
    "h": 205.352,
    "s": 63.964,
    "l": 21.765
  },
  "oklch": {
    "l": 0.34715,
    "c": 0.06926,
    "h": 244.1
  },
  "luminance": 0.04242
}

Semantic roles & 50–950 ramp

primary

#143D5B

secondary

#935E38

accent

#8741E7

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070B

muted

#797A7C

Preview Lab

Preview with #143D5B

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

Preview Lab → · Contrast checker → · Palette generator →