#3F48BA#3F48BA

#3F48BA is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.5% C 0.177 H 273.8°. Best body text is #FFFFFF at 7.38:1 contrast (WCAG AA passes).

Color values

HEX	#3F48BA
RGB	rgb(63, 72, 186)
HSL	hsl(236, 49%, 49%)
HSV	hsv(236, 66%, 73%)
CMYK	cmyk(66.1%, 61.3%, 0%, 27.1%)
CIE-LAB	lab(36.43, 33.10, -61.31)
CIE-LCH	lch(36.43, 69.68, 298.36°)
OKLab	oklab(46.53% 0.0118 -0.1767)
OKLCH	oklch(46.53% 0.177 273.8)
XYZ	xyz(13.2272, 9.2355, 47.5304)
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

#3F48BA #BAB13F

analogous

#3F86BA #3F48BA #743FBA

triadic

#3F48BA #BA3F48 #48BA3F

tetradic

#3F48BA #BA3F86 #BAB13F #3FBA74

square

#3F48BA #BA3F86 #BAB13F #3FBA74

split-complementary

#3F48BA #BA743F #86BA3F

monochromatic

#20255F #30368C #3F48BA #6A71CC #979CDC

Accessibility & contrast

On white

7.38

#3F48BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#3F48BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F48BA

7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F48BA	#FFFFFF	#000000	##FFFFFF
##3F48BA	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)

#005BBE

Deuteranopia (green-blind)

#0050B8

Tritanopia (blue-blind)

#00657A

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f48ba;
/* rgb */ color: rgb(63, 72, 186);
/* oklch */ color: oklch(46.5% 0.177 273.8);

Tailwind

colors: {
  custom: {
    50: '#827bd0',
    500: '#3f48ba',
    950: '#000000',
  },
}

SCSS

$custom: #3f48ba;
$custom-light: #827bd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f48ba",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 186
  },
  "hsl": {
    "h": 235.61,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.46526,
    "c": 0.17709,
    "h": 273.8
  },
  "luminance": 0.09237
}

Semantic roles & 50–950 ramp

primary

#3F48BA

secondary

#C8C38D

accent

#CF4FD9

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #3F48BA

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

Preview Lab → · Contrast checker → · Palette generator →