#143B83#143B83

#143B83 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.2% C 0.129 H 261.3°. Best body text is #FFFFFF at 10.59:1 contrast (WCAG AA passes).

Color values

HEX	#143B83
RGB	rgb(20, 59, 131)
HSL	hsl(219, 74%, 30%)
HSV	hsv(219, 85%, 51%)
CMYK	cmyk(84.7%, 55%, 0%, 48.6%)
CIE-LAB	lab(26.49, 15.36, -44.28)
CIE-LCH	lch(26.49, 46.87, 289.13°)
OKLab	oklab(37.15% -0.0195 -0.1277)
OKLCH	oklch(37.15% 0.129 261.3)
XYZ	xyz(5.9477, 4.9146, 22.1035)
Luminance	0.0491 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143B83 #835C14

analogous

#147383 #143B83 #251483

triadic

#143B83 #83143B #3B8314

tetradic

#143B83 #831473 #835C14 #148325

square

#143B83 #831473 #835C14 #148325

split-complementary

#143B83 #832514 #738314

monochromatic

#040C1B #0C234E #143B83 #1C53B8 #326FE0

Accessibility & contrast

On white

10.59

#143B83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#143B83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143B83

10.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143B83	#FFFFFF	#000000	##FFFFFF
##143B83	1.00	10.59	1.98	10.59
#FFFFFF	10.59	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#024486

Deuteranopia (green-blind)

#003A82

Tritanopia (blue-blind)

#004D59

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #143b83;
/* rgb */ color: rgb(20, 59, 131);
/* oklch */ color: oklch(37.2% 0.129 261.3);

Tailwind

colors: {
  custom: {
    50: '#6670a8',
    500: '#143b83',
    950: '#000000',
  },
}

SCSS

$custom: #143b83;
$custom-light: #6670a8;
$custom-dark: #000000;

JSON

{
  "hex": "#143b83",
  "rgb": {
    "r": 20,
    "g": 59,
    "b": 131
  },
  "hsl": {
    "h": 218.919,
    "s": 73.51,
    "l": 29.608
  },
  "oklch": {
    "l": 0.37153,
    "c": 0.12921,
    "h": 261.3
  },
  "luminance": 0.04915
}

Semantic roles & 50–950 ramp

primary

#143B83

secondary

#B88C3B

accent

#AF38F0

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #143B83

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

Preview Lab → · Contrast checker → · Palette generator →