#143B63#143B63

#143B63 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.7% C 0.083 H 251.9°. Best body text is #FFFFFF at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#143B63
RGB	rgb(20, 59, 99)
HSL	hsl(210, 66%, 23%)
HSV	hsv(210, 80%, 39%)
CMYK	cmyk(79.8%, 40.4%, 0%, 61.2%)
CIE-LAB	lab(24.25, 1.92, -27.53)
CIE-LCH	lch(24.25, 27.60, 274.00°)
OKLab	oklab(34.71% -0.0256 -0.0785)
OKLCH	oklch(34.71% 0.083 251.9)
XYZ	xyz(4.1037, 4.1770, 12.3919)
Luminance	0.0418 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143B63 #633C14

analogous

#146263 #143B63 #141463

triadic

#143B63 #63143B #3B6314

tetradic

#143B63 #631462 #633C14 #146314

square

#143B63 #631462 #633C14 #146314

split-complementary

#143B63 #631414 #626314

monochromatic

#050F19 #0A1D30 #143B63 #1E5996 #2978C9

Accessibility & contrast

On white

11.44

#143B63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#143B63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143B63

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143B63	#FFFFFF	#000000	##FFFFFF
##143B63	1.00	11.44	1.84	11.44
#FFFFFF	11.44	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#283E65

Deuteranopia (green-blind)

#1C3662

Tritanopia (blue-blind)

#00444A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #143b63;
/* rgb */ color: rgb(20, 59, 99);
/* oklch */ color: oklch(34.7% 0.083 251.9);

Tailwind

colors: {
  custom: {
    50: '#5e708f',
    500: '#143b63',
    950: '#000000',
  },
}

SCSS

$custom: #143b63;
$custom-light: #5e708f;
$custom-dark: #000000;

JSON

{
  "hex": "#143b63",
  "rgb": {
    "r": 20,
    "g": 59,
    "b": 99
  },
  "hsl": {
    "h": 210.38,
    "s": 66.387,
    "l": 23.333
  },
  "oklch": {
    "l": 0.34706,
    "c": 0.08254,
    "h": 251.9
  },
  "luminance": 0.04178
}

Semantic roles & 50–950 ramp

primary

#143B63

secondary

#9A6A38

accent

#953EE9

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #143B63

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

Preview Lab → · Contrast checker → · Palette generator →