#3949BF#3949BF

#3949BF is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.8% C 0.184 H 271.4°. Best body text is #FFFFFF at 7.29:1 contrast (WCAG AA passes).

Color values

HEX	#3949BF
RGB	rgb(57, 73, 191)
HSL	hsl(233, 54%, 49%)
HSV	hsv(233, 70%, 75%)
CMYK	cmyk(70.2%, 61.8%, 0%, 25.1%)
CIE-LAB	lab(36.73, 33.38, -63.77)
CIE-LCH	lch(36.73, 71.98, 297.63°)
OKLab	oklab(46.78% 0.0043 -0.1841)
OKLCH	oklch(46.78% 0.184 271.4)
XYZ	xyz(13.4707, 9.3952, 50.3837)
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

#3949BF #BFAF39

analogous

#398CBF #3949BF #6C39BF

triadic

#3949BF #BF3949 #49BF39

tetradic

#3949BF #BF398C #BFAF39 #39BF6C

square

#3949BF #BF398C #BFAF39 #39BF6C

split-complementary

#3949BF #BF6C39 #8CBF39

monochromatic

#1D2561 #2B3790 #3949BF #6471D1 #939CDF

Accessibility & contrast

On white

7.29

#3949BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#3949BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3949BF

7.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3949BF	#FFFFFF	#000000	##FFFFFF
##3949BF	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)

#005DC3

Deuteranopia (green-blind)

#0050BD

Tritanopia (blue-blind)

#00677D

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3949bf;
/* rgb */ color: rgb(57, 73, 191);
/* oklch */ color: oklch(46.8% 0.184 271.4);

Tailwind

colors: {
  custom: {
    50: '#817bd3',
    500: '#3949bf',
    950: '#000000',
  },
}

SCSS

$custom: #3949bf;
$custom-light: #817bd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3949bf",
  "rgb": {
    "r": 57,
    "g": 73,
    "b": 191
  },
  "hsl": {
    "h": 232.836,
    "s": 54.032,
    "l": 48.627
  },
  "oklch": {
    "l": 0.46781,
    "c": 0.18411,
    "h": 271.4
  },
  "luminance": 0.09397
}

Semantic roles & 50–950 ramp

primary

#3949BF

secondary

#CAC28A

accent

#CC4ADD

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3949BF

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

Preview Lab → · Contrast checker → · Palette generator →