#3F47BD#3F47BD

#3F47BD is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.6% C 0.182 H 273.9°. Best body text is #FFFFFF at 7.38:1 contrast (WCAG AA passes).

Color values

HEX	#3F47BD
RGB	rgb(63, 71, 189)
HSL	hsl(236, 50%, 49%)
HSV	hsv(236, 67%, 74%)
CMYK	cmyk(66.7%, 62.4%, 0%, 25.9%)
CIE-LAB	lab(36.44, 34.77, -63.07)
CIE-LCH	lch(36.44, 72.02, 298.87°)
OKLab	oklab(46.6% 0.0124 -0.1819)
OKLCH	oklch(46.6% 0.182 273.9)
XYZ	xyz(13.4854, 9.2362, 49.2063)
Luminance	0.0924 (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

#3F47BD #BDB53F

analogous

#3F86BD #3F47BD #763FBD

triadic

#3F47BD #BD3F47 #47BD3F

tetradic

#3F47BD #BD3F86 #BDB53F #3FBD76

square

#3F47BD #BD3F86 #BDB53F #3FBD76

split-complementary

#3F47BD #BD763F #86BD3F

monochromatic

#202561 #30368F #3F47BD #6B72CE #999EDD

Accessibility & contrast

On white

7.38

#3F47BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#3F47BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F47BD

7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F47BD	#FFFFFF	#000000	##FFFFFF
##3F47BD	1.00	7.38	2.85	7.38
#FFFFFF	7.38	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BC1

Deuteranopia (green-blind)

#0050BB

Tritanopia (blue-blind)

#00657B

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f47bd;
/* rgb */ color: rgb(63, 71, 189);
/* oklch */ color: oklch(46.6% 0.182 273.9);

Tailwind

colors: {
  custom: {
    50: '#837ad2',
    500: '#3f47bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f47bd;
$custom-light: #837ad2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f47bd",
  "rgb": {
    "r": 63,
    "g": 71,
    "b": 189
  },
  "hsl": {
    "h": 236.19,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.46603,
    "c": 0.18231,
    "h": 273.9
  },
  "luminance": 0.09237
}

Semantic roles & 50–950 ramp

primary

#3F47BD

secondary

#C9C58F

accent

#D14EDA

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F47BD

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

Preview Lab → · Contrast checker → · Palette generator →