#143CA1#143CA1

#143CA1 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.0% C 0.169 H 263.8°. Best body text is #FFFFFF at 9.59:1 contrast (WCAG AA passes).

Color values

HEX	#143CA1
RGB	rgb(20, 60, 161)
HSL	hsl(223, 78%, 35%)
HSV	hsv(223, 88%, 63%)
CMYK	cmyk(87.6%, 62.7%, 0%, 36.9%)
CIE-LAB	lab(29.29, 26.91, -58.15)
CIE-LCH	lch(29.29, 64.08, 294.83°)
OKLab	oklab(40.05% -0.0182 -0.1684)
OKLCH	oklch(40.05% 0.169 263.8)
XYZ	xyz(8.3351, 5.9526, 34.4210)
Luminance	0.0595 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143CA1 #A17914

analogous

#1482A1 #143CA1 #3314A1

triadic

#143CA1 #A1143C #3CA114

tetradic

#143CA1 #A11482 #A17914 #14A133

square

#143CA1 #A11482 #A17914 #14A133

split-complementary

#143CA1 #A13314 #82A114

monochromatic

#061334 #0D286B #143CA1 #1B50D7 #4775E8

Accessibility & contrast

On white

9.59

#143CA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#143CA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143CA1

9.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143CA1	#FFFFFF	#000000	##FFFFFF
##143CA1	1.00	9.59	2.19	9.59
#FFFFFF	9.59	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA4

Deuteranopia (green-blind)

#003F9F

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #143ca1;
/* rgb */ color: rgb(20, 60, 161);
/* oklch */ color: oklch(40.0% 0.169 263.8);

Tailwind

colors: {
  custom: {
    50: '#6f71be',
    500: '#143ca1',
    950: '#000000',
  },
}

SCSS

$custom: #143ca1;
$custom-light: #6f71be;
$custom-dark: #000000;

JSON

{
  "hex": "#143ca1",
  "rgb": {
    "r": 20,
    "g": 60,
    "b": 161
  },
  "hsl": {
    "h": 222.979,
    "s": 77.901,
    "l": 35.49
  },
  "oklch": {
    "l": 0.40046,
    "c": 0.16941,
    "h": 263.8
  },
  "luminance": 0.05954
}

Semantic roles & 50–950 ramp

primary

#143CA1

secondary

#C9A448

accent

#BE33F4

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #143CA1

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

Preview Lab → · Contrast checker → · Palette generator →