#3947BB#3947BB

#3947BB is a mid, vivid blue. Relative luminance 0.090; OKLCH L 46.1% C 0.181 H 271.9°. Best body text is #FFFFFF at 7.52:1 contrast (WCAG AA passes).

Color values

HEX	#3947BB
RGB	rgb(57, 71, 187)
HSL	hsl(234, 53%, 48%)
HSV	hsv(234, 70%, 73%)
CMYK	cmyk(69.5%, 62%, 0%, 26.7%)
CIE-LAB	lab(35.91, 33.24, -62.77)
CIE-LCH	lch(35.91, 71.02, 297.90°)
OKLab	oklab(46.07% 0.006 -0.1811)
OKLCH	oklch(46.07% 0.181 271.9)
XYZ	xyz(12.9072, 8.9629, 48.0539)
Luminance	0.0896 (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

#3947BB #BBAD39

analogous

#3988BB #3947BB #6C39BB

triadic

#3947BB #BB3947 #47BB39

tetradic

#3947BB #BB3988 #BBAD39 #39BB6C

square

#3947BB #BB3988 #BBAD39 #39BB6C

split-complementary

#3947BB #BB6C39 #88BB39

monochromatic

#1C235D #2B358C #3947BB #626ECF #9199DD

Accessibility & contrast

On white

7.52

#3947BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#3947BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3947BB

7.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3947BB	#FFFFFF	#000000	##FFFFFF
##3947BB	1.00	7.52	2.79	7.52
#FFFFFF	7.52	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BBF

Deuteranopia (green-blind)

#004FB9

Tritanopia (blue-blind)

#00657A

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3947bb;
/* rgb */ color: rgb(57, 71, 187);
/* oklch */ color: oklch(46.1% 0.181 271.9);

Tailwind

colors: {
  custom: {
    50: '#807ad0',
    500: '#3947bb',
    950: '#000000',
  },
}

SCSS

$custom: #3947bb;
$custom-light: #807ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#3947bb",
  "rgb": {
    "r": 57,
    "g": 71,
    "b": 187
  },
  "hsl": {
    "h": 233.538,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.46073,
    "c": 0.18122,
    "h": 271.9
  },
  "luminance": 0.08964
}

Semantic roles & 50–950 ramp

primary

#3947BB

secondary

#C8C187

accent

#CD4BDD

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #3947BB

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

Preview Lab → · Contrast checker → · Palette generator →