#143C63#143C63

#143C63 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 35.0% C 0.081 H 250.9°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#143C63
RGB	rgb(20, 60, 99)
HSL	hsl(210, 66%, 23%)
HSV	hsv(210, 80%, 39%)
CMYK	cmyk(79.8%, 39.4%, 0%, 61.2%)
CIE-LAB	lab(24.58, 1.24, -27.00)
CIE-LCH	lch(24.58, 27.03, 272.62°)
OKLab	oklab(34.97% -0.0266 -0.0769)
OKLCH	oklch(34.97% 0.081 250.9)
XYZ	xyz(4.1556, 4.2808, 12.4092)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143C63 #633B14

analogous

#146362 #143C63 #141463

triadic

#143C63 #63143C #3C6314

tetradic

#143C63 #621463 #633B14 #146314

square

#143C63 #621463 #633B14 #146314

split-complementary

#143C63 #631414 #636214

monochromatic

#050F19 #0A1D30 #143C63 #1E5B96 #297AC9

Accessibility & contrast

On white

11.31

#143C63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#143C63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143C63

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143C63	#FFFFFF	#000000	##FFFFFF
##143C63	1.00	11.31	1.86	11.31
#FFFFFF	11.31	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A3E65

Deuteranopia (green-blind)

#1E3762

Tritanopia (blue-blind)

#00454A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #143c63;
/* rgb */ color: rgb(20, 60, 99);
/* oklch */ color: oklch(35.0% 0.081 250.9);

Tailwind

colors: {
  custom: {
    50: '#5e718f',
    500: '#143c63',
    950: '#000000',
  },
}

SCSS

$custom: #143c63;
$custom-light: #5e718f;
$custom-dark: #000000;

JSON

{
  "hex": "#143c63",
  "rgb": {
    "r": 20,
    "g": 60,
    "b": 99
  },
  "hsl": {
    "h": 209.62,
    "s": 66.387,
    "l": 23.333
  },
  "oklch": {
    "l": 0.34965,
    "c": 0.0814,
    "h": 250.9
  },
  "luminance": 0.04281
}

Semantic roles & 50–950 ramp

primary

#143C63

secondary

#9A6938

accent

#933EE9

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #143C63

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

Preview Lab → · Contrast checker → · Palette generator →