#3F49BD#3F49BD

#3F49BD is a mid, vivid blue. Relative luminance 0.095; OKLCH L 47.0% C 0.180 H 273.5°. Best body text is #FFFFFF at 7.24:1 contrast (WCAG AA passes).

Color values

HEX	#3F49BD
RGB	rgb(63, 73, 189)
HSL	hsl(235, 50%, 49%)
HSV	hsv(235, 67%, 74%)
CMYK	cmyk(66.7%, 61.4%, 0%, 25.9%)
CIE-LAB	lab(36.92, 33.51, -62.28)
CIE-LCH	lch(36.92, 70.73, 298.28°)
OKLab	oklab(46.96% 0.0109 -0.1795)
OKLCH	oklch(46.96% 0.18 273.5)
XYZ	xyz(13.6147, 9.4947, 49.2494)
Luminance	0.0950 (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

#3F49BD #BDB33F

analogous

#3F88BD #3F49BD #743FBD

triadic

#3F49BD #BD3F49 #49BD3F

tetradic

#3F49BD #BD3F88 #BDB33F #3FBD74

square

#3F49BD #BD3F88 #BDB33F #3FBD74

split-complementary

#3F49BD #BD743F #88BD3F

monochromatic

#202661 #30378F #3F49BD #6B73CE #999FDD

Accessibility & contrast

On white

7.24

#3F49BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#3F49BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F49BD

7.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F49BD	#FFFFFF	#000000	##FFFFFF
##3F49BD	1.00	7.24	2.90	7.24
#FFFFFF	7.24	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC1

Deuteranopia (green-blind)

#0051BB

Tritanopia (blue-blind)

#00667C

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f49bd;
/* rgb */ color: rgb(63, 73, 189);
/* oklch */ color: oklch(47.0% 0.180 273.5);

Tailwind

colors: {
  custom: {
    50: '#837bd2',
    500: '#3f49bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f49bd;
$custom-light: #837bd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f49bd",
  "rgb": {
    "r": 63,
    "g": 73,
    "b": 189
  },
  "hsl": {
    "h": 235.238,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.4696,
    "c": 0.17987,
    "h": 273.5
  },
  "luminance": 0.09496
}

Semantic roles & 50–950 ramp

primary

#3F49BD

secondary

#C9C48F

accent

#CE4EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F49BD

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

Preview Lab → · Contrast checker → · Palette generator →