#143DA1#143DA1

#143DA1 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.2% C 0.168 H 263.6°. Best body text is #FFFFFF at 9.49:1 contrast (WCAG AA passes).

Color values

HEX	#143DA1
RGB	rgb(20, 61, 161)
HSL	hsl(223, 78%, 35%)
HSV	hsv(223, 88%, 63%)
CMYK	cmyk(87.6%, 62.1%, 0%, 36.9%)
CIE-LAB	lab(29.56, 26.23, -57.72)
CIE-LCH	lch(29.56, 63.40, 294.44°)
OKLab	oklab(40.24% -0.0188 -0.1671)
OKLCH	oklch(40.24% 0.168 263.6)
XYZ	xyz(8.3880, 6.0584, 34.4386)
Luminance	0.0606 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143DA1 #A17814

analogous

#1483A1 #143DA1 #3114A1

triadic

#143DA1 #A1143D #3DA114

tetradic

#143DA1 #A11483 #A17814 #14A131

square

#143DA1 #A11483 #A17814 #14A131

split-complementary

#143DA1 #A13114 #83A114

monochromatic

#061434 #0D286B #143DA1 #1B52D7 #4776E8

Accessibility & contrast

On white

9.49

#143DA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#143DA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143DA1

9.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143DA1	#FFFFFF	#000000	##FFFFFF
##143DA1	1.00	9.49	2.21	9.49
#FFFFFF	9.49	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA4

Deuteranopia (green-blind)

#003F9F

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #143da1;
/* rgb */ color: rgb(20, 61, 161);
/* oklch */ color: oklch(40.2% 0.168 263.6);

Tailwind

colors: {
  custom: {
    50: '#6f72be',
    500: '#143da1',
    950: '#000000',
  },
}

SCSS

$custom: #143da1;
$custom-light: #6f72be;
$custom-dark: #000000;

JSON

{
  "hex": "#143da1",
  "rgb": {
    "r": 20,
    "g": 61,
    "b": 161
  },
  "hsl": {
    "h": 222.553,
    "s": 77.901,
    "l": 35.49
  },
  "oklch": {
    "l": 0.40245,
    "c": 0.16818,
    "h": 263.6
  },
  "luminance": 0.06059
}

Semantic roles & 50–950 ramp

primary

#143DA1

secondary

#C9A348

accent

#BC33F4

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #143DA1

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

Preview Lab → · Contrast checker → · Palette generator →