#3747C4#3747C4

#3747C4 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.8% C 0.194 H 271.0°. Best body text is #FFFFFF at 7.34:1 contrast (WCAG AA passes).

Color values

HEX	#3747C4
RGB	rgb(55, 71, 196)
HSL	hsl(233, 56%, 49%)
HSV	hsv(233, 72%, 77%)
CMYK	cmyk(71.9%, 63.8%, 0%, 23.1%)
CIE-LAB	lab(36.56, 36.17, -66.98)
CIE-LCH	lch(36.56, 76.13, 298.37°)
OKLab	oklab(46.75% 0.0035 -0.1935)
OKLCH	oklch(46.75% 0.194 271)
XYZ	xyz(13.7892, 9.3028, 53.2828)
Luminance	0.0930 (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

#3747C4 #C4B437

analogous

#378EC4 #3747C4 #6D37C4

triadic

#3747C4 #C43747 #47C437

tetradic

#3747C4 #C4378E #C4B437 #37C46D

square

#3747C4 #C4378E #C4B437 #37C46D

split-complementary

#3747C4 #C46D37 #8EC437

monochromatic

#1C2464 #2A3694 #3747C4 #6571D4 #949DE1

Accessibility & contrast

On white

7.34

#3747C4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#3747C4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3747C4

7.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3747C4	#FFFFFF	#000000	##FFFFFF
##3747C4	1.00	7.34	2.86	7.34
#FFFFFF	7.34	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC8

Deuteranopia (green-blind)

#0050C2

Tritanopia (blue-blind)

#00687F

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3747c4;
/* rgb */ color: rgb(55, 71, 196);
/* oklch */ color: oklch(46.8% 0.194 271.0);

Tailwind

colors: {
  custom: {
    50: '#817ad7',
    500: '#3747c4',
    950: '#000000',
  },
}

SCSS

$custom: #3747c4;
$custom-light: #817ad7;
$custom-dark: #000000;

JSON

{
  "hex": "#3747c4",
  "rgb": {
    "r": 55,
    "g": 71,
    "b": 196
  },
  "hsl": {
    "h": 233.191,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.46754,
    "c": 0.19356,
    "h": 271
  },
  "luminance": 0.09304
}

Semantic roles & 50–950 ramp

primary

#3747C4

secondary

#CCC58B

accent

#CE48DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3747C4

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

Preview Lab → · Contrast checker → · Palette generator →