#143F6B#143F6B

#143F6B is a dark, moderate cyan. Relative luminance 0.048; OKLCH L 36.3% C 0.089 H 252.1°. Best body text is #FFFFFF at 10.75:1 contrast (WCAG AA passes).

Color values

HEX	#143F6B
RGB	rgb(20, 63, 107)
HSL	hsl(210, 69%, 25%)
HSV	hsv(210, 81%, 42%)
CMYK	cmyk(81.3%, 41.1%, 0%, 58%)
CIE-LAB	lab(26.05, 2.50, -29.81)
CIE-LCH	lch(26.05, 29.91, 274.80°)
OKLab	oklab(36.28% -0.0274 -0.0851)
OKLCH	oklch(36.28% 0.089 252.1)
XYZ	xyz(4.7188, 4.7647, 14.5780)
Luminance	0.0476 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143F6B #6B4014

analogous

#146A6B #143F6B #15146B

triadic

#143F6B #6B143F #3F6B14

tetradic

#143F6B #6B146A #6B4014 #146B15

square

#143F6B #6B146A #6B4014 #146B15

split-complementary

#143F6B #6B1514 #6A6B14

monochromatic

#050F1A #0A2137 #143F6B #1E5D9F #277CD2

Accessibility & contrast

On white

10.75

#143F6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#143F6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143F6B

10.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143F6B	#FFFFFF	#000000	##FFFFFF
##143F6B	1.00	10.75	1.95	10.75
#FFFFFF	10.75	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A426D

Deuteranopia (green-blind)

#1C3A6A

Tritanopia (blue-blind)

#00494F

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #143f6b;
/* rgb */ color: rgb(20, 63, 107);
/* oklch */ color: oklch(36.3% 0.089 252.1);

Tailwind

colors: {
  custom: {
    50: '#607395',
    500: '#143f6b',
    950: '#000000',
  },
}

SCSS

$custom: #143f6b;
$custom-light: #607395;
$custom-dark: #000000;

JSON

{
  "hex": "#143f6b",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 107
  },
  "hsl": {
    "h": 210.345,
    "s": 68.504,
    "l": 24.902
  },
  "oklch": {
    "l": 0.36278,
    "c": 0.08939,
    "h": 252.1
  },
  "luminance": 0.04765
}

Semantic roles & 50–950 ramp

primary

#143F6B

secondary

#A26E39

accent

#953CEB

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#05080D

muted

#7A7B7E

Preview Lab

Preview with #143F6B

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

Preview Lab → · Contrast checker → · Palette generator →