#3F49BA#3F49BA

#3F49BA is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.7% C 0.176 H 273.6°. Best body text is #FFFFFF at 7.31:1 contrast (WCAG AA passes).

Color values

HEX	#3F49BA
RGB	rgb(63, 73, 186)
HSL	hsl(235, 49%, 49%)
HSV	hsv(235, 66%, 73%)
CMYK	cmyk(66.1%, 60.8%, 0%, 27.1%)
CIE-LAB	lab(36.68, 32.47, -60.91)
CIE-LCH	lch(36.68, 69.03, 298.06°)
OKLab	oklab(46.71% 0.0109 -0.1755)
OKLCH	oklch(46.71% 0.176 273.6)
XYZ	xyz(13.2924, 9.3658, 47.5521)
Luminance	0.0937 (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

#3F49BA #BAB03F

analogous

#3F87BA #3F49BA #733FBA

triadic

#3F49BA #BA3F49 #49BA3F

tetradic

#3F49BA #BA3F87 #BAB03F #3FBA73

square

#3F49BA #BA3F87 #BAB03F #3FBA73

split-complementary

#3F49BA #BA733F #87BA3F

monochromatic

#20255F #30378C #3F49BA #6A72CC #979DDC

Accessibility & contrast

On white

7.31

#3F49BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#3F49BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F49BA

7.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F49BA	#FFFFFF	#000000	##FFFFFF
##3F49BA	1.00	7.31	2.87	7.31
#FFFFFF	7.31	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CBE

Deuteranopia (green-blind)

#0051B8

Tritanopia (blue-blind)

#00657A

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f49ba;
/* rgb */ color: rgb(63, 73, 186);
/* oklch */ color: oklch(46.7% 0.176 273.6);

Tailwind

colors: {
  custom: {
    50: '#827bd0',
    500: '#3f49ba',
    950: '#000000',
  },
}

SCSS

$custom: #3f49ba;
$custom-light: #827bd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f49ba",
  "rgb": {
    "r": 63,
    "g": 73,
    "b": 186
  },
  "hsl": {
    "h": 235.122,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.46708,
    "c": 0.17586,
    "h": 273.6
  },
  "luminance": 0.09367
}

Semantic roles & 50–950 ramp

primary

#3F49BA

secondary

#C8C38D

accent

#CE4FD9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #3F49BA

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

Preview Lab → · Contrast checker → · Palette generator →