#3F4BB2#3F4BB2

#3F4BB2 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.4% C 0.162 H 273.3°. Best body text is #FFFFFF at 7.34:1 contrast (WCAG AA passes).

Color values

HEX	#3F4BB2
RGB	rgb(63, 75, 178)
HSL	hsl(234, 48%, 47%)
HSV	hsv(234, 65%, 70%)
CMYK	cmyk(64.6%, 57.9%, 0%, 30.2%)
CIE-LAB	lab(36.56, 28.39, -56.39)
CIE-LCH	lch(36.56, 63.13, 296.72°)
OKLab	oklab(46.42% 0.0093 -0.1622)
OKLCH	oklch(46.42% 0.162 273.3)
XYZ	xyz(12.5992, 9.3022, 43.2424)
Luminance	0.0930 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4BB2 #B2A63F

analogous

#3F85B2 #3F4BB2 #6C3FB2

triadic

#3F4BB2 #B23F4B #4BB23F

tetradic

#3F4BB2 #B23F85 #B2A63F #3FB26C

square

#3F4BB2 #B23F85 #B2A63F #3FB26C

split-complementary

#3F4BB2 #B26C3F #85B23F

monochromatic

#1F2558 #2F3885 #3F4BB2 #6670C9 #939AD9

Accessibility & contrast

On white

7.34

#3F4BB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#3F4BB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4BB2

7.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4BB2	#FFFFFF	#000000	##FFFFFF
##3F4BB2	1.00	7.34	2.86	7.34
#FFFFFF	7.34	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BB5

Deuteranopia (green-blind)

#0051B0

Tritanopia (blue-blind)

#006477

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f4bb2;
/* rgb */ color: rgb(63, 75, 178);
/* oklch */ color: oklch(46.4% 0.162 273.3);

Tailwind

colors: {
  custom: {
    50: '#817dca',
    500: '#3f4bb2',
    950: '#000000',
  },
}

SCSS

$custom: #3f4bb2;
$custom-light: #817dca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4bb2",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 178
  },
  "hsl": {
    "h": 233.739,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.46424,
    "c": 0.16246,
    "h": 273.3
  },
  "luminance": 0.09303
}

Semantic roles & 50–950 ramp

primary

#3F4BB2

secondary

#C4BE89

accent

#C950D7

background

#F8F7FC

surface

#F0EEF8

border

#CBC9D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3F4BB2

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

Preview Lab → · Contrast checker → · Palette generator →