#3F47BE#3F47BE

#3F47BE is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.7% C 0.184 H 273.9°. Best body text is #FFFFFF at 7.35:1 contrast (WCAG AA passes).

Color values

HEX	#3F47BE
RGB	rgb(63, 71, 190)
HSL	hsl(236, 50%, 50%)
HSV	hsv(236, 67%, 75%)
CMYK	cmyk(66.8%, 62.6%, 0%, 25.5%)
CIE-LAB	lab(36.52, 35.11, -63.53)
CIE-LCH	lch(36.52, 72.59, 298.93°)
OKLab	oklab(46.69% 0.0124 -0.1832)
OKLCH	oklch(46.69% 0.184 273.9)
XYZ	xyz(13.5943, 9.2797, 49.7800)
Luminance	0.0928 (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

#3F47BE #BEB63F

analogous

#3F87BE #3F47BE #763FBE

triadic

#3F47BE #BE3F47 #47BE3F

tetradic

#3F47BE #BE3F87 #BEB63F #3FBE76

square

#3F47BE #BE3F87 #BEB63F #3FBE76

split-complementary

#3F47BE #BE763F #87BE3F

monochromatic

#212562 #303690 #3F47BE #6C72CE #9A9EDD

Accessibility & contrast

On white

7.35

#3F47BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#3F47BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F47BE

7.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F47BE	#FFFFFF	#000000	##FFFFFF
##3F47BE	1.00	7.35	2.86	7.35
#FFFFFF	7.35	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CC2

Deuteranopia (green-blind)

#0050BC

Tritanopia (blue-blind)

#00657C

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f47be;
/* rgb */ color: rgb(63, 71, 190);
/* oklch */ color: oklch(46.7% 0.184 273.9);

Tailwind

colors: {
  custom: {
    50: '#837ad3',
    500: '#3f47be',
    950: '#000000',
  },
}

SCSS

$custom: #3f47be;
$custom-light: #837ad3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f47be",
  "rgb": {
    "r": 63,
    "g": 71,
    "b": 190
  },
  "hsl": {
    "h": 236.22,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.46689,
    "c": 0.18363,
    "h": 273.9
  },
  "luminance": 0.09281
}

Semantic roles & 50–950 ramp

primary

#3F47BE

secondary

#C9C68F

accent

#D14EDA

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F47BE

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

Preview Lab → · Contrast checker → · Palette generator →