#3747C1#3747C1

#3747C1 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.5% C 0.190 H 271.1°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#3747C1
RGB	rgb(55, 71, 193)
HSL	hsl(233, 56%, 49%)
HSV	hsv(233, 72%, 76%)
CMYK	cmyk(71.5%, 63.2%, 0%, 24.3%)
CIE-LAB	lab(36.30, 35.11, -65.65)
CIE-LCH	lch(36.30, 74.45, 298.14°)
OKLab	oklab(46.49% 0.0036 -0.1896)
OKLCH	oklch(46.49% 0.19 271.1)
XYZ	xyz(13.4512, 9.1676, 51.5024)
Luminance	0.0917 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3747C1 #C1B137

analogous

#378CC1 #3747C1 #6C37C1

triadic

#3747C1 #C13747 #47C137

tetradic

#3747C1 #C1378C #C1B137 #37C16C

square

#3747C1 #C1378C #C1B137 #37C16C

split-complementary

#3747C1 #C16C37 #8CC137

monochromatic

#1C2462 #293591 #3747C1 #6370D2 #929BE0

Accessibility & contrast

On white

7.41

#3747C1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#3747C1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3747C1

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3747C1	#FFFFFF	#000000	##FFFFFF
##3747C1	1.00	7.41	2.83	7.41
#FFFFFF	7.41	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CC5

Deuteranopia (green-blind)

#004FBF

Tritanopia (blue-blind)

#00677D

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3747c1;
/* rgb */ color: rgb(55, 71, 193);
/* oklch */ color: oklch(46.5% 0.190 271.1);

Tailwind

colors: {
  custom: {
    50: '#817ad5',
    500: '#3747c1',
    950: '#000000',
  },
}

SCSS

$custom: #3747c1;
$custom-light: #817ad5;
$custom-dark: #000000;

JSON

{
  "hex": "#3747c1",
  "rgb": {
    "r": 55,
    "g": 71,
    "b": 193
  },
  "hsl": {
    "h": 233.043,
    "s": 55.645,
    "l": 48.627
  },
  "oklch": {
    "l": 0.46488,
    "c": 0.18966,
    "h": 271.1
  },
  "luminance": 0.09169
}

Semantic roles & 50–950 ramp

primary

#3747C1

secondary

#CBC389

accent

#CE49DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3747C1

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

Preview Lab → · Contrast checker → · Palette generator →