#3F46C1#3F46C1

#3F46C1 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.8% C 0.189 H 273.9°. Best body text is #FFFFFF at 7.35:1 contrast (WCAG AA passes).

Color values

HEX	#3F46C1
RGB	rgb(63, 70, 193)
HSL	hsl(237, 51%, 50%)
HSV	hsv(237, 67%, 76%)
CMYK	cmyk(67.4%, 63.7%, 0%, 24.3%)
CIE-LAB	lab(36.53, 36.77, -65.26)
CIE-LCH	lch(36.53, 74.91, 299.40°)
OKLab	oklab(46.78% 0.013 -0.1883)
OKLCH	oklch(46.78% 0.189 273.9)
XYZ	xyz(13.8625, 9.2861, 51.5036)
Luminance	0.0929 (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

#3F46C1 #C1BA3F

analogous

#3F87C1 #3F46C1 #793FC1

triadic

#3F46C1 #C13F46 #46C13F

tetradic

#3F46C1 #C13F87 #C1BA3F #3FC179

square

#3F46C1 #C13F87 #C1BA3F #3FC179

split-complementary

#3F46C1 #C1793F #87C13F

monochromatic

#212465 #303593 #3F46C1 #6D73D0 #9C9FDF

Accessibility & contrast

On white

7.35

#3F46C1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#3F46C1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F46C1

7.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F46C1	#FFFFFF	#000000	##FFFFFF
##3F46C1	1.00	7.35	2.86	7.35
#FFFFFF	7.35	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CC5

Deuteranopia (green-blind)

#0050BF

Tritanopia (blue-blind)

#00667D

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f46c1;
/* rgb */ color: rgb(63, 70, 193);
/* oklch */ color: oklch(46.8% 0.189 273.9);

Tailwind

colors: {
  custom: {
    50: '#8479d5',
    500: '#3f46c1',
    950: '#000000',
  },
}

SCSS

$custom: #3f46c1;
$custom-light: #8479d5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f46c1",
  "rgb": {
    "r": 63,
    "g": 70,
    "b": 193
  },
  "hsl": {
    "h": 236.769,
    "s": 51.181,
    "l": 50.196
  },
  "oklch": {
    "l": 0.46776,
    "c": 0.18876,
    "h": 273.9
  },
  "luminance": 0.09287
}

Semantic roles & 50–950 ramp

primary

#3F46C1

secondary

#CBC891

accent

#D34DDB

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F46C1

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

Preview Lab → · Contrast checker → · Palette generator →