#143F63#143F63

#143F63 is a dark, moderate cyan. Relative luminance 0.046; OKLCH L 35.7% C 0.078 H 247.6°. Best body text is #FFFFFF at 10.93:1 contrast (WCAG AA passes).

Color values

HEX	#143F63
RGB	rgb(20, 63, 99)
HSL	hsl(207, 66%, 23%)
HSV	hsv(207, 80%, 39%)
CMYK	cmyk(79.8%, 36.4%, 0%, 61.2%)
CIE-LAB	lab(25.58, -0.81, -25.43)
CIE-LCH	lch(25.58, 25.44, 268.19°)
OKLab	oklab(35.75% -0.0298 -0.0722)
OKLCH	oklch(35.75% 0.078 247.6)
XYZ	xyz(4.3173, 4.6041, 12.4631)
Luminance	0.0461 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143F63 #633814

analogous

#14635F #143F63 #141763

triadic

#143F63 #63143F #3F6314

tetradic

#143F63 #5F1463 #633814 #176314

square

#143F63 #5F1463 #633814 #176314

split-complementary

#143F63 #631417 #635F14

monochromatic

#051019 #0A1F30 #143F63 #1E5F96 #2980C9

Accessibility & contrast

On white

10.93

#143F63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#143F63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143F63

10.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143F63	#FFFFFF	#000000	##FFFFFF
##143F63	1.00	10.93	1.92	10.93
#FFFFFF	10.93	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E4165

Deuteranopia (green-blind)

#233962

Tritanopia (blue-blind)

#00484C

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #143f63;
/* rgb */ color: rgb(20, 63, 99);
/* oklch */ color: oklch(35.7% 0.078 247.6);

Tailwind

colors: {
  custom: {
    50: '#5e738f',
    500: '#143f63',
    950: '#000000',
  },
}

SCSS

$custom: #143f63;
$custom-light: #5e738f;
$custom-dark: #000000;

JSON

{
  "hex": "#143f63",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 99
  },
  "hsl": {
    "h": 207.342,
    "s": 66.387,
    "l": 23.333
  },
  "oklch": {
    "l": 0.35747,
    "c": 0.07814,
    "h": 247.6
  },
  "luminance": 0.04605
}

Semantic roles & 50–950 ramp

primary

#143F63

secondary

#9A6538

accent

#8C3EE9

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #143F63

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

Preview Lab → · Contrast checker → · Palette generator →