#3947BF#3947BF

#3947BF is a mid, vivid blue. Relative luminance 0.091; OKLCH L 46.4% C 0.187 H 271.8°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#3947BF
RGB	rgb(57, 71, 191)
HSL	hsl(234, 54%, 49%)
HSV	hsv(234, 70%, 75%)
CMYK	cmyk(70.2%, 62.8%, 0%, 25.1%)
CIE-LAB	lab(36.25, 34.65, -64.57)
CIE-LCH	lch(36.25, 73.28, 298.22°)
OKLab	oklab(46.42% 0.0058 -0.1864)
OKLCH	oklch(46.42% 0.187 271.8)
XYZ	xyz(13.3414, 9.1366, 50.3406)
Luminance	0.0914 (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

#3947BF #BFB139

analogous

#398ABF #3947BF #6E39BF

triadic

#3947BF #BF3947 #47BF39

tetradic

#3947BF #BF398A #BFB139 #39BF6E

square

#3947BF #BF398A #BFB139 #39BF6E

split-complementary

#3947BF #BF6E39 #8ABF39

monochromatic

#1D2461 #2B3590 #3947BF #6470D1 #939BDF

Accessibility & contrast

On white

7.43

#3947BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#3947BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3947BF

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3947BF	#FFFFFF	#000000	##FFFFFF
##3947BF	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CC3

Deuteranopia (green-blind)

#004FBD

Tritanopia (blue-blind)

#00667C

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3947bf;
/* rgb */ color: rgb(57, 71, 191);
/* oklch */ color: oklch(46.4% 0.187 271.8);

Tailwind

colors: {
  custom: {
    50: '#817ad3',
    500: '#3947bf',
    950: '#000000',
  },
}

SCSS

$custom: #3947bf;
$custom-light: #817ad3;
$custom-dark: #000000;

JSON

{
  "hex": "#3947bf",
  "rgb": {
    "r": 57,
    "g": 71,
    "b": 191
  },
  "hsl": {
    "h": 233.731,
    "s": 54.032,
    "l": 48.627
  },
  "oklch": {
    "l": 0.46421,
    "c": 0.18651,
    "h": 271.8
  },
  "luminance": 0.09138
}

Semantic roles & 50–950 ramp

primary

#3947BF

secondary

#CAC38A

accent

#CE4ADD

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3947BF

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

Preview Lab → · Contrast checker → · Palette generator →