#143D7D#143D7D

#143D7D is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.1% C 0.118 H 259.3°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).

Color values

HEX	#143D7D
RGB	rgb(20, 61, 125)
HSL	hsl(217, 72%, 28%)
HSV	hsv(217, 84%, 49%)
CMYK	cmyk(84%, 51.2%, 0%, 51%)
CIE-LAB	lab(26.64, 11.44, -40.29)
CIE-LCH	lch(26.64, 41.88, 285.85°)
OKLab	oklab(37.12% -0.0218 -0.1159)
OKLCH	oklch(37.12% 0.118 259.3)
XYZ	xyz(5.6576, 4.9662, 20.0585)
Luminance	0.0497 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143D7D #7D5414

analogous

#14717D #143D7D #1F147D

triadic

#143D7D #7D143D #3D7D14

tetradic

#143D7D #7D1471 #7D5414 #147D1F

square

#143D7D #7D1471 #7D5414 #147D1F

split-complementary

#143D7D #7D1F14 #717D14

monochromatic

#040D1A #0C2348 #143D7D #1C57B2 #2E72DE

Accessibility & contrast

On white

10.53

#143D7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#143D7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143D7D

10.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143D7D	#FFFFFF	#000000	##FFFFFF
##143D7D	1.00	10.53	1.99	10.53
#FFFFFF	10.53	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16447F

Deuteranopia (green-blind)

#003B7C

Tritanopia (blue-blind)

#004C57

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #143d7d;
/* rgb */ color: rgb(20, 61, 125);
/* oklch */ color: oklch(37.1% 0.118 259.3);

Tailwind

colors: {
  custom: {
    50: '#6571a3',
    500: '#143d7d',
    950: '#000000',
  },
}

SCSS

$custom: #143d7d;
$custom-light: #6571a3;
$custom-dark: #000000;

JSON

{
  "hex": "#143d7d",
  "rgb": {
    "r": 20,
    "g": 61,
    "b": 125
  },
  "hsl": {
    "h": 216.571,
    "s": 72.414,
    "l": 28.431
  },
  "oklch": {
    "l": 0.37122,
    "c": 0.11795,
    "h": 259.3
  },
  "luminance": 0.04967
}

Semantic roles & 50–950 ramp

primary

#143D7D

secondary

#B2843A

accent

#A839EF

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #143D7D

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

Preview Lab → · Contrast checker → · Palette generator →