#3747C6#3747C6

#3747C6 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.9% C 0.196 H 271.0°. Best body text is #FFFFFF at 7.29:1 contrast (WCAG AA passes).

Color values

HEX	#3747C6
RGB	rgb(55, 71, 198)
HSL	hsl(233, 57%, 50%)
HSV	hsv(233, 72%, 78%)
CMYK	cmyk(72.2%, 64.1%, 0%, 22.4%)
CIE-LAB	lab(36.73, 36.88, -67.87)
CIE-LCH	lch(36.73, 77.24, 298.52°)
OKLab	oklab(46.93% 0.0034 -0.1961)
OKLCH	oklch(46.93% 0.196 271)
XYZ	xyz(14.0184, 9.3945, 54.4897)
Luminance	0.0940 (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

#3747C6 #C6B637

analogous

#378EC6 #3747C6 #6F37C6

triadic

#3747C6 #C63747 #47C637

tetradic

#3747C6 #C6378E #C6B637 #37C66F

square

#3747C6 #C6378E #C6B637 #37C66F

split-complementary

#3747C6 #C66F37 #8EC637

monochromatic

#1C2566 #2A3696 #3747C6 #6672D4 #969EE2

Accessibility & contrast

On white

7.29

#3747C6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#3747C6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3747C6

7.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3747C6	#FFFFFF	#000000	##FFFFFF
##3747C6	1.00	7.29	2.88	7.29
#FFFFFF	7.29	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DCA

Deuteranopia (green-blind)

#0050C4

Tritanopia (blue-blind)

#006880

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3747c6;
/* rgb */ color: rgb(55, 71, 198);
/* oklch */ color: oklch(46.9% 0.196 271.0);

Tailwind

colors: {
  custom: {
    50: '#827ad8',
    500: '#3747c6',
    950: '#000000',
  },
}

SCSS

$custom: #3747c6;
$custom-light: #827ad8;
$custom-dark: #000000;

JSON

{
  "hex": "#3747c6",
  "rgb": {
    "r": 55,
    "g": 71,
    "b": 198
  },
  "hsl": {
    "h": 233.287,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.46934,
    "c": 0.19616,
    "h": 271
  },
  "luminance": 0.09396
}

Semantic roles & 50–950 ramp

primary

#3747C6

secondary

#CDC68C

accent

#CF48E0

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0C0915

muted

#7D7B83

Preview Lab

Preview with #3747C6

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

Preview Lab → · Contrast checker → · Palette generator →