#143FA1#143FA1

#143FA1 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.6% C 0.166 H 263.1°. Best body text is #FFFFFF at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#143FA1
RGB	rgb(20, 63, 161)
HSL	hsl(222, 78%, 35%)
HSV	hsv(222, 88%, 63%)
CMYK	cmyk(87.6%, 60.9%, 0%, 36.9%)
CIE-LAB	lab(30.10, 24.87, -56.84)
CIE-LCH	lch(30.10, 62.04, 293.63°)
OKLab	oklab(40.65% -0.0198 -0.1645)
OKLCH	oklch(40.65% 0.166 263.1)
XYZ	xyz(8.4967, 6.2759, 34.4748)
Luminance	0.0628 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143FA1 #A17614

analogous

#1485A1 #143FA1 #2F14A1

triadic

#143FA1 #A1143F #3FA114

tetradic

#143FA1 #A11485 #A17614 #14A12F

square

#143FA1 #A11485 #A17614 #14A12F

split-complementary

#143FA1 #A12F14 #85A114

monochromatic

#061434 #0D2A6B #143FA1 #1B54D7 #4778E8

Accessibility & contrast

On white

9.31

#143FA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#143FA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143FA1

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143FA1	#FFFFFF	#000000	##FFFFFF
##143FA1	1.00	9.31	2.26	9.31
#FFFFFF	9.31	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA4

Deuteranopia (green-blind)

#00419F

Tritanopia (blue-blind)

#00586A

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #143fa1;
/* rgb */ color: rgb(20, 63, 161);
/* oklch */ color: oklch(40.6% 0.166 263.1);

Tailwind

colors: {
  custom: {
    50: '#6f73be',
    500: '#143fa1',
    950: '#000000',
  },
}

SCSS

$custom: #143fa1;
$custom-light: #6f73be;
$custom-dark: #000000;

JSON

{
  "hex": "#143fa1",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 161
  },
  "hsl": {
    "h": 221.702,
    "s": 77.901,
    "l": 35.49
  },
  "oklch": {
    "l": 0.40647,
    "c": 0.1657,
    "h": 263.1
  },
  "luminance": 0.06277
}

Semantic roles & 50–950 ramp

primary

#143FA1

secondary

#C9A248

accent

#BA33F4

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #143FA1

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

Preview Lab → · Contrast checker → · Palette generator →