#3F47C1#3F47C1

#3F47C1 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.9% C 0.188 H 273.7°. Best body text is #FFFFFF at 7.29:1 contrast (WCAG AA passes).

Color values

HEX	#3F47C1
RGB	rgb(63, 71, 193)
HSL	hsl(236, 51%, 50%)
HSV	hsv(236, 67%, 76%)
CMYK	cmyk(67.4%, 63.2%, 0%, 24.3%)
CIE-LAB	lab(36.77, 36.15, -64.88)
CIE-LCH	lch(36.77, 74.27, 299.13°)
OKLab	oklab(46.95% 0.0122 -0.1872)
OKLCH	oklch(46.95% 0.188 273.7)
XYZ	xyz(13.9256, 9.4122, 51.5246)
Luminance	0.0941 (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

#3F47C1 #C1B93F

analogous

#3F88C1 #3F47C1 #783FC1

triadic

#3F47C1 #C13F47 #47C13F

tetradic

#3F47C1 #C13F88 #C1B93F #3FC178

square

#3F47C1 #C13F88 #C1B93F #3FC178

split-complementary

#3F47C1 #C1783F #88C13F

monochromatic

#212565 #303693 #3F47C1 #6D73D0 #9CA0DF

Accessibility & contrast

On white

7.29

#3F47C1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#3F47C1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F47C1

7.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F47C1	#FFFFFF	#000000	##FFFFFF
##3F47C1	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)

#005CC5

Deuteranopia (green-blind)

#0051BF

Tritanopia (blue-blind)

#00667D

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f47c1;
/* rgb */ color: rgb(63, 71, 193);
/* oklch */ color: oklch(46.9% 0.188 273.7);

Tailwind

colors: {
  custom: {
    50: '#847ad5',
    500: '#3f47c1',
    950: '#000000',
  },
}

SCSS

$custom: #3f47c1;
$custom-light: #847ad5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f47c1",
  "rgb": {
    "r": 63,
    "g": 71,
    "b": 193
  },
  "hsl": {
    "h": 236.308,
    "s": 51.181,
    "l": 50.196
  },
  "oklch": {
    "l": 0.46949,
    "c": 0.18757,
    "h": 273.7
  },
  "luminance": 0.09413
}

Semantic roles & 50–950 ramp

primary

#3F47C1

secondary

#CBC791

accent

#D24DDB

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F47C1

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

Preview Lab → · Contrast checker → · Palette generator →