#3647BF#3647BF

#3647BF is a mid, vivid blue. Relative luminance 0.091; OKLCH L 46.3% C 0.187 H 270.8°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#3647BF
RGB	rgb(54, 71, 191)
HSL	hsl(233, 56%, 48%)
HSV	hsv(233, 72%, 75%)
CMYK	cmyk(71.7%, 62.8%, 0%, 25.1%)
CIE-LAB	lab(36.08, 34.28, -64.84)
CIE-LCH	lch(36.08, 73.35, 297.86°)
OKLab	oklab(46.26% 0.0027 -0.1873)
OKLCH	oklch(46.26% 0.187 270.8)
XYZ	xyz(13.1753, 9.0510, 50.3328)
Luminance	0.0905 (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

#3647BF #BFAE36

analogous

#368BBF #3647BF #6A36BF

triadic

#3647BF #BF3647 #47BF36

tetradic

#3647BF #BF368B #BFAE36 #36BF6A

square

#3647BF #BF368B #BFAE36 #36BF6A

split-complementary

#3647BF #BF6A36 #8BBF36

monochromatic

#1B2460 #29358F #3647BF #606ED2 #909AE0

Accessibility & contrast

On white

7.47

#3647BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#3647BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3647BF

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3647BF	#FFFFFF	#000000	##FFFFFF
##3647BF	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BC3

Deuteranopia (green-blind)

#004FBD

Tritanopia (blue-blind)

#00667C

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3647bf;
/* rgb */ color: rgb(54, 71, 191);
/* oklch */ color: oklch(46.3% 0.187 270.8);

Tailwind

colors: {
  custom: {
    50: '#807ad3',
    500: '#3647bf',
    950: '#000000',
  },
}

SCSS

$custom: #3647bf;
$custom-light: #807ad3;
$custom-dark: #000000;

JSON

{
  "hex": "#3647bf",
  "rgb": {
    "r": 54,
    "g": 71,
    "b": 191
  },
  "hsl": {
    "h": 232.555,
    "s": 55.918,
    "l": 48.039
  },
  "oklch": {
    "l": 0.46257,
    "c": 0.18731,
    "h": 270.8
  },
  "luminance": 0.09052
}

Semantic roles & 50–950 ramp

primary

#3647BF

secondary

#CAC287

accent

#CD49DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3647BF

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

Preview Lab → · Contrast checker → · Palette generator →