#3F52C1#3F52C1

#3F52C1 is a mid, vivid blue. Relative luminance 0.109; OKLCH L 49.0% C 0.174 H 271.1°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#3F52C1
RGB	rgb(63, 82, 193)
HSL	hsl(231, 51%, 50%)
HSV	hsv(231, 67%, 76%)
CMYK	cmyk(67.4%, 57.5%, 0%, 24.3%)
CIE-LAB	lab(39.48, 29.19, -60.45)
CIE-LCH	lch(39.48, 67.13, 295.77°)
OKLab	oklab(48.96% 0.0034 -0.1741)
OKLCH	oklch(48.96% 0.174 271.1)
XYZ	xyz(14.6896, 10.9402, 51.7793)
Luminance	0.1094 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F52C1 #C1AE3F

analogous

#3F93C1 #3F52C1 #6D3FC1

triadic

#3F52C1 #C13F52 #52C13F

tetradic

#3F52C1 #C13F93 #C1AE3F #3FC16D

square

#3F52C1 #C13F93 #C1AE3F #3FC16D

split-complementary

#3F52C1 #C16D3F #93C13F

monochromatic

#212B65 #303E93 #3F52C1 #6D7CD0 #9CA5DF

Accessibility & contrast

On white

6.59

#3F52C1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#3F52C1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F52C1

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F52C1	#FFFFFF	#000000	##FFFFFF
##3F52C1	1.00	6.59	3.19	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C5

Deuteranopia (green-blind)

#0057BF

Tritanopia (blue-blind)

#006D81

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3f52c1;
/* rgb */ color: rgb(63, 82, 193);
/* oklch */ color: oklch(49.0% 0.174 271.1);

Tailwind

colors: {
  custom: {
    50: '#8382d5',
    500: '#3f52c1',
    950: '#000000',
  },
}

SCSS

$custom: #3f52c1;
$custom-light: #8382d5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f52c1",
  "rgb": {
    "r": 63,
    "g": 82,
    "b": 193
  },
  "hsl": {
    "h": 231.231,
    "s": 51.181,
    "l": 50.196
  },
  "oklch": {
    "l": 0.48957,
    "c": 0.17411,
    "h": 271.1
  },
  "luminance": 0.10942
}

Semantic roles & 50–950 ramp

primary

#3F52C1

secondary

#CBC291

accent

#C64DDB

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F52C1

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

Preview Lab → · Contrast checker → · Palette generator →