#3729C6#3729C6

#3729C6 is a dark, highly saturated blue. Relative luminance 0.065; OKLCH L 42.5% C 0.226 H 274.8°. Best body text is #FFFFFF at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#3729C6
RGB	rgb(55, 41, 198)
HSL	hsl(245, 66%, 47%)
HSV	hsv(245, 79%, 78%)
CMYK	cmyk(72.2%, 79.3%, 0%, 22.4%)
CIE-LAB	lab(30.58, 53.89, -78.01)
CIE-LCH	lch(30.58, 94.81, 304.64°)
OKLab	oklab(42.53% 0.0191 -0.2256)
OKLCH	oklch(42.53% 0.226 274.8)
XYZ	xyz(12.5582, 6.4741, 54.0029)
Luminance	0.0648 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3729C6 #B8C629

analogous

#296AC6 #3729C6 #8529C6

triadic

#3729C6 #C63729 #29C637

tetradic

#3729C6 #C6296A #B8C629 #29C685

square

#3729C6 #C6296A #B8C629 #29C685

split-complementary

#3729C6 #C68529 #6AC629

monochromatic

#1B1461 #291F93 #3729C6 #5D51DB #8D84E6

Accessibility & contrast

On white

9.15

#3729C6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#3729C6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3729C6

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3729C6	#FFFFFF	#000000	##FFFFFF
##3729C6	1.00	9.15	2.30	9.15
#FFFFFF	9.15	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FCA

Deuteranopia (green-blind)

#0041C3

Tritanopia (blue-blind)

#005978

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3729c6;
/* rgb */ color: rgb(55, 41, 198);
/* oklch */ color: oklch(42.5% 0.226 274.8);

Tailwind

colors: {
  custom: {
    50: '#8467d9',
    500: '#3729c6',
    950: '#000000',
  },
}

SCSS

$custom: #3729c6;
$custom-light: #8467d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3729c6",
  "rgb": {
    "r": 55,
    "g": 41,
    "b": 198
  },
  "hsl": {
    "h": 245.35,
    "s": 65.69,
    "l": 46.863
  },
  "oklch": {
    "l": 0.42528,
    "c": 0.22639,
    "h": 274.8
  },
  "luminance": 0.06475
}

Semantic roles & 50–950 ramp

primary

#3729C6

secondary

#C7CF7C

accent

#E93FDA

background

#F9F6FD

surface

#F1EBFB

border

#CBC6D4

text

#0D0615

muted

#7E7A83

Preview Lab

Preview with #3729C6

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

Preview Lab → · Contrast checker → · Palette generator →