#143B5B#143B5B

#143B5B is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.2% C 0.071 H 246.8°. Best body text is #FFFFFF at 11.63:1 contrast (WCAG AA passes).

Color values

HEX	#143B5B
RGB	rgb(20, 59, 91)
HSL	hsl(207, 64%, 22%)
HSV	hsv(207, 78%, 36%)
CMYK	cmyk(78%, 35.2%, 0%, 64.3%)
CIE-LAB	lab(23.78, -1.38, -23.07)
CIE-LCH	lch(23.78, 23.11, 266.58°)
OKLab	oklab(34.18% -0.0281 -0.0654)
OKLCH	oklch(34.18% 0.071 246.8)
XYZ	xyz(3.7401, 4.0316, 10.4766)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143B5B #5B3414

analogous

#145B58 #143B5B #14185B

triadic

#143B5B #5B143B #3B5B14

tetradic

#143B5B #58145B #5B3414 #185B14

square

#143B5B #58145B #5B3414 #185B14

split-complementary

#143B5B #5B1418 #5B5814

monochromatic

#061019 #091A29 #143B5B #1F5C8D #2A7CBF

Accessibility & contrast

On white

11.63

#143B5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#143B5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143B5B

11.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143B5B	#FFFFFF	#000000	##FFFFFF
##143B5B	1.00	11.63	1.81	11.63
#FFFFFF	11.63	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3C5C

Deuteranopia (green-blind)

#22365A

Tritanopia (blue-blind)

#004346

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #143b5b;
/* rgb */ color: rgb(20, 59, 91);
/* oklch */ color: oklch(34.2% 0.071 246.8);

Tailwind

colors: {
  custom: {
    50: '#5c7089',
    500: '#143b5b',
    950: '#000000',
  },
}

SCSS

$custom: #143b5b;
$custom-light: #5c7089;
$custom-dark: #000000;

JSON

{
  "hex": "#143b5b",
  "rgb": {
    "r": 20,
    "g": 59,
    "b": 91
  },
  "hsl": {
    "h": 207.042,
    "s": 63.964,
    "l": 21.765
  },
  "oklch": {
    "l": 0.3418,
    "c": 0.07119,
    "h": 246.8
  },
  "luminance": 0.04032
}

Semantic roles & 50–950 ramp

primary

#143B5B

secondary

#936138

accent

#8C41E7

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070B

muted

#797A7C

Preview Lab

Preview with #143B5B

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

Preview Lab → · Contrast checker → · Palette generator →