#3F49BE#3F49BE

#3F49BE is a mid, vivid blue. Relative luminance 0.095; OKLCH L 47.0% C 0.181 H 273.4°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#3F49BE
RGB	rgb(63, 73, 190)
HSL	hsl(235, 50%, 50%)
HSV	hsv(235, 67%, 75%)
CMYK	cmyk(66.8%, 61.6%, 0%, 25.5%)
CIE-LAB	lab(37.00, 33.86, -62.74)
CIE-LCH	lch(37.00, 71.29, 298.35°)
OKLab	oklab(47.04% 0.0108 -0.1809)
OKLCH	oklch(47.04% 0.181 273.4)
XYZ	xyz(13.7236, 9.5383, 49.8231)
Luminance	0.0954 (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

#3F49BE #BEB43F

analogous

#3F88BE #3F49BE #753FBE

triadic

#3F49BE #BE3F49 #49BE3F

tetradic

#3F49BE #BE3F88 #BEB43F #3FBE75

square

#3F49BE #BE3F88 #BEB43F #3FBE75

split-complementary

#3F49BE #BE753F #88BE3F

monochromatic

#212662 #303790 #3F49BE #6C74CE #9A9FDD

Accessibility & contrast

On white

7.22

#3F49BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#3F49BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F49BE

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F49BE	#FFFFFF	#000000	##FFFFFF
##3F49BE	1.00	7.22	2.91	7.22
#FFFFFF	7.22	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC2

Deuteranopia (green-blind)

#0051BC

Tritanopia (blue-blind)

#00667C

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f49be;
/* rgb */ color: rgb(63, 73, 190);
/* oklch */ color: oklch(47.0% 0.181 273.4);

Tailwind

colors: {
  custom: {
    50: '#837cd3',
    500: '#3f49be',
    950: '#000000',
  },
}

SCSS

$custom: #3f49be;
$custom-light: #837cd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f49be",
  "rgb": {
    "r": 63,
    "g": 73,
    "b": 190
  },
  "hsl": {
    "h": 235.276,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.47045,
    "c": 0.18119,
    "h": 273.4
  },
  "luminance": 0.0954
}

Semantic roles & 50–950 ramp

primary

#3F49BE

secondary

#C9C58F

accent

#CF4EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F49BE

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

Preview Lab → · Contrast checker → · Palette generator →