#3729C0#3729C0

#3729C0 is a dark, highly saturated blue. Relative luminance 0.062; OKLCH L 41.9% C 0.219 H 275.4°. Best body text is #FFFFFF at 9.37:1 contrast (WCAG AA passes).

Color values

HEX	#3729C0
RGB	rgb(55, 41, 192)
HSL	hsl(246, 65%, 46%)
HSV	hsv(246, 79%, 75%)
CMYK	cmyk(71.4%, 78.6%, 0%, 24.7%)
CIE-LAB	lab(29.92, 52.07, -75.57)
CIE-LCH	lch(29.92, 91.77, 304.57°)
OKLab	oklab(41.88% 0.0206 -0.2185)
OKLCH	oklch(41.88% 0.219 275.4)
XYZ	xyz(11.8798, 6.2027, 50.4301)
Luminance	0.0620 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3729C0 #B2C029

analogous

#2966C0 #3729C0 #8229C0

triadic

#3729C0 #C03729 #29C037

tetradic

#3729C0 #C02966 #B2C029 #29C082

square

#3729C0 #C02966 #B2C029 #29C082

split-complementary

#3729C0 #C08229 #66C029

monochromatic

#1A135B #291E8E #3729C0 #5A4DD9 #8980E4

Accessibility & contrast

On white

9.37

#3729C0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#3729C0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3729C0

9.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3729C0	#FFFFFF	#000000	##FFFFFF
##3729C0	1.00	9.37	2.24	9.37
#FFFFFF	9.37	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DC4

Deuteranopia (green-blind)

#0040BD

Tritanopia (blue-blind)

#005774

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3729c0;
/* rgb */ color: rgb(55, 41, 192);
/* oklch */ color: oklch(41.9% 0.219 275.4);

Tailwind

colors: {
  custom: {
    50: '#8367d4',
    500: '#3729c0',
    950: '#000000',
  },
}

SCSS

$custom: #3729c0;
$custom-light: #8367d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3729c0",
  "rgb": {
    "r": 55,
    "g": 41,
    "b": 192
  },
  "hsl": {
    "h": 245.563,
    "s": 64.807,
    "l": 45.686
  },
  "oklch": {
    "l": 0.41875,
    "c": 0.21948,
    "h": 275.4
  },
  "luminance": 0.06204
}

Semantic roles & 50–950 ramp

primary

#3729C0

secondary

#C5CC78

accent

#E840D8

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0614

muted

#7D7A83

Preview Lab

Preview with #3729C0

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

Preview Lab → · Contrast checker → · Palette generator →