#3747C0#3747C0

#3747C0 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 46.4% C 0.188 H 271.1°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#3747C0
RGB	rgb(55, 71, 192)
HSL	hsl(233, 55%, 48%)
HSV	hsv(233, 71%, 75%)
CMYK	cmyk(71.4%, 63%, 0%, 24.7%)
CIE-LAB	lab(36.22, 34.75, -65.20)
CIE-LCH	lch(36.22, 73.89, 298.06°)
OKLab	oklab(46.4% 0.0037 -0.1883)
OKLCH	oklch(46.4% 0.188 271.1)
XYZ	xyz(13.3400, 9.1231, 50.9169)
Luminance	0.0912 (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

#3747C0 #C0B037

analogous

#378BC0 #3747C0 #6B37C0

triadic

#3747C0 #C03747 #47C037

tetradic

#3747C0 #C0378B #C0B037 #37C06B

square

#3747C0 #C0378B #C0B037 #37C06B

split-complementary

#3747C0 #C06B37 #8BC037

monochromatic

#1C2461 #293590 #3747C0 #626FD2 #929BE0

Accessibility & contrast

On white

7.43

#3747C0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#3747C0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3747C0

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3747C0	#FFFFFF	#000000	##FFFFFF
##3747C0	1.00	7.43	2.82	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CC4

Deuteranopia (green-blind)

#004FBE

Tritanopia (blue-blind)

#00667D

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3747c0;
/* rgb */ color: rgb(55, 71, 192);
/* oklch */ color: oklch(46.4% 0.188 271.1);

Tailwind

colors: {
  custom: {
    50: '#807ad4',
    500: '#3747c0',
    950: '#000000',
  },
}

SCSS

$custom: #3747c0;
$custom-light: #807ad4;
$custom-dark: #000000;

JSON

{
  "hex": "#3747c0",
  "rgb": {
    "r": 55,
    "g": 71,
    "b": 192
  },
  "hsl": {
    "h": 232.993,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.46399,
    "c": 0.18836,
    "h": 271.1
  },
  "luminance": 0.09124
}

Semantic roles & 50–950 ramp

primary

#3747C0

secondary

#CBC388

accent

#CD49DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3747C0

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

Preview Lab → · Contrast checker → · Palette generator →