#3723A4#3723A4

#3723A4 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 38.1% C 0.192 H 279.2°. Best body text is #FFFFFF at 10.83:1 contrast (WCAG AA passes).

Color values

HEX	#3723A4
RGB	rgb(55, 35, 164)
HSL	hsl(249, 65%, 39%)
HSV	hsv(249, 79%, 64%)
CMYK	cmyk(66.5%, 78.7%, 0%, 35.7%)
CIE-LAB	lab(25.84, 46.48, -65.58)
CIE-LCH	lch(25.84, 80.38, 305.33°)
OKLab	oklab(38.13% 0.0307 -0.1894)
OKLCH	oklch(38.13% 0.192 279.2)
XYZ	xyz(8.8753, 4.6939, 35.5531)
Luminance	0.0469 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3723A4 #90A423

analogous

#2350A4 #3723A4 #7823A4

triadic

#3723A4 #A43723 #23A437

tetradic

#3723A4 #A42350 #90A423 #23A478

square

#3723A4 #A42350 #90A423 #23A478

split-complementary

#3723A4 #A47823 #50A423

monochromatic

#150D3F #261872 #3723A4 #4A31D3 #7764DE

Accessibility & contrast

On white

10.83

#3723A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#3723A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3723A4

10.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3723A4	#FFFFFF	#000000	##FFFFFF
##3723A4	1.00	10.83	1.94	10.83
#FFFFFF	10.83	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042A8

Deuteranopia (green-blind)

#0038A2

Tritanopia (blue-blind)

#004963

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #3723a4;
/* rgb */ color: rgb(55, 35, 164);
/* oklch */ color: oklch(38.1% 0.192 279.2);

Tailwind

colors: {
  custom: {
    50: '#7d62c0',
    500: '#3723a4',
    950: '#000000',
  },
}

SCSS

$custom: #3723a4;
$custom-light: #7d62c0;
$custom-dark: #000000;

JSON

{
  "hex": "#3723a4",
  "rgb": {
    "r": 55,
    "g": 35,
    "b": 164
  },
  "hsl": {
    "h": 249.302,
    "s": 64.824,
    "l": 39.02
  },
  "oklch": {
    "l": 0.38134,
    "c": 0.19184,
    "h": 279.2
  },
  "luminance": 0.04695
}

Semantic roles & 50–950 ramp

primary

#3723A4

secondary

#B4C360

accent

#E840CE

background

#F8F5FC

surface

#EFEAF8

border

#CAC6D1

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #3723A4

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

Preview Lab → · Contrast checker → · Palette generator →