#143F83#143F83

#143F83 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.1% C 0.124 H 259.6°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#143F83
RGB	rgb(20, 63, 131)
HSL	hsl(217, 74%, 30%)
HSV	hsv(217, 85%, 51%)
CMYK	cmyk(84.7%, 51.9%, 0%, 48.6%)
CIE-LAB	lab(27.69, 12.55, -42.35)
CIE-LCH	lch(27.69, 44.17, 286.50°)
OKLab	oklab(38.07% -0.0225 -0.1219)
OKLCH	oklch(38.07% 0.124 259.6)
XYZ	xyz(6.1612, 5.3417, 22.1746)
Luminance	0.0534 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143F83 #835814

analogous

#147783 #143F83 #211483

triadic

#143F83 #83143F #3F8314

tetradic

#143F83 #831477 #835814 #148321

square

#143F83 #831477 #835814 #148321

split-complementary

#143F83 #832114 #778314

monochromatic

#040D1B #0C254E #143F83 #1C59B8 #3275E0

Accessibility & contrast

On white

10.15

#143F83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#143F83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143F83

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143F83	#FFFFFF	#000000	##FFFFFF
##143F83	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#144785

Deuteranopia (green-blind)

#003D82

Tritanopia (blue-blind)

#00505A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #143f83;
/* rgb */ color: rgb(20, 63, 131);
/* oklch */ color: oklch(38.1% 0.124 259.6);

Tailwind

colors: {
  custom: {
    50: '#6673a8',
    500: '#143f83',
    950: '#000000',
  },
}

SCSS

$custom: #143f83;
$custom-light: #6673a8;
$custom-dark: #000000;

JSON

{
  "hex": "#143f83",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 131
  },
  "hsl": {
    "h": 216.757,
    "s": 73.51,
    "l": 29.608
  },
  "oklch": {
    "l": 0.38066,
    "c": 0.124,
    "h": 259.6
  },
  "luminance": 0.05342
}

Semantic roles & 50–950 ramp

primary

#143F83

secondary

#B8873B

accent

#A938F0

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #143F83

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

Preview Lab → · Contrast checker → · Palette generator →