#3F44BE#3F44BE

#3F44BE is a mid, vivid blue. Relative luminance 0.089; OKLCH L 46.2% C 0.187 H 274.5°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#3F44BE
RGB	rgb(63, 68, 190)
HSL	hsl(238, 50%, 50%)
HSV	hsv(238, 67%, 75%)
CMYK	cmyk(66.8%, 64.2%, 0%, 25.5%)
CIE-LAB	lab(35.81, 36.98, -64.69)
CIE-LCH	lch(35.81, 74.52, 299.76°)
OKLab	oklab(46.17% 0.0147 -0.1866)
OKLCH	oklch(46.17% 0.187 274.5)
XYZ	xyz(13.4082, 8.9075, 49.7179)
Luminance	0.0891 (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

#3F44BE #BEB93F

analogous

#3F84BE #3F44BE #7A3FBE

triadic

#3F44BE #BE3F44 #44BE3F

tetradic

#3F44BE #BE3F84 #BEB93F #3FBE7A

square

#3F44BE #BE3F84 #BEB93F #3FBE7A

split-complementary

#3F44BE #BE7A3F #84BE3F

monochromatic

#212362 #303490 #3F44BE #6C70CE #9A9DDD

Accessibility & contrast

On white

7.55

#3F44BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#3F44BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F44BE

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F44BE	#FFFFFF	#000000	##FFFFFF
##3F44BE	1.00	7.55	2.78	7.55
#FFFFFF	7.55	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AC2

Deuteranopia (green-blind)

#004FBC

Tritanopia (blue-blind)

#00637B

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3f44be;
/* rgb */ color: rgb(63, 68, 190);
/* oklch */ color: oklch(46.2% 0.187 274.5);

Tailwind

colors: {
  custom: {
    50: '#8478d3',
    500: '#3f44be',
    950: '#000000',
  },
}

SCSS

$custom: #3f44be;
$custom-light: #8478d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f44be",
  "rgb": {
    "r": 63,
    "g": 68,
    "b": 190
  },
  "hsl": {
    "h": 237.638,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.46168,
    "c": 0.18722,
    "h": 274.5
  },
  "luminance": 0.08909
}

Semantic roles & 50–950 ramp

primary

#3F44BE

secondary

#C9C78F

accent

#D44EDA

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F44BE

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

Preview Lab → · Contrast checker → · Palette generator →