#3747BE#3747BE

#3747BE is a mid, vivid blue. Relative luminance 0.090; OKLCH L 46.2% C 0.186 H 271.2°. Best body text is #FFFFFF at 7.48:1 contrast (WCAG AA passes).

Color values

HEX	#3747BE
RGB	rgb(55, 71, 190)
HSL	hsl(233, 55%, 48%)
HSV	hsv(233, 71%, 75%)
CMYK	cmyk(71.1%, 62.6%, 0%, 25.5%)
CIE-LAB	lab(36.05, 34.04, -64.31)
CIE-LCH	lch(36.05, 72.76, 297.90°)
OKLab	oklab(46.22% 0.0038 -0.1857)
OKLCH	oklch(46.22% 0.186 271.2)
XYZ	xyz(13.1199, 9.0351, 49.7577)
Luminance	0.0904 (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

#3747BE #BEAE37

analogous

#378ABE #3747BE #6A37BE

triadic

#3747BE #BE3747 #47BE37

tetradic

#3747BE #BE378A #BEAE37 #37BE6A

square

#3747BE #BE378A #BEAE37 #37BE6A

split-complementary

#3747BE #BE6A37 #8ABE37

monochromatic

#1C245F #29358F #3747BE #616ED1 #909ADF

Accessibility & contrast

On white

7.48

#3747BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#3747BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3747BE

7.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3747BE	#FFFFFF	#000000	##FFFFFF
##3747BE	1.00	7.48	2.81	7.48
#FFFFFF	7.48	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BC2

Deuteranopia (green-blind)

#004FBC

Tritanopia (blue-blind)

#00667C

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3747be;
/* rgb */ color: rgb(55, 71, 190);
/* oklch */ color: oklch(46.2% 0.186 271.2);

Tailwind

colors: {
  custom: {
    50: '#807ad3',
    500: '#3747be',
    950: '#000000',
  },
}

SCSS

$custom: #3747be;
$custom-light: #807ad3;
$custom-dark: #000000;

JSON

{
  "hex": "#3747be",
  "rgb": {
    "r": 55,
    "g": 71,
    "b": 190
  },
  "hsl": {
    "h": 232.889,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.46223,
    "c": 0.18573,
    "h": 271.2
  },
  "luminance": 0.09036
}

Semantic roles & 50–950 ramp

primary

#3747BE

secondary

#CAC287

accent

#CD49DE

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3747BE

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

Preview Lab → · Contrast checker → · Palette generator →