#3F52C3#3F52C3

#3F52C3 is a mid, vivid blue. Relative luminance 0.110; OKLCH L 49.1% C 0.177 H 271.1°. Best body text is #FFFFFF at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#3F52C3
RGB	rgb(63, 82, 195)
HSL	hsl(231, 52%, 51%)
HSV	hsv(231, 68%, 76%)
CMYK	cmyk(67.7%, 57.9%, 0%, 23.5%)
CIE-LAB	lab(39.63, 29.90, -61.37)
CIE-LCH	lch(39.63, 68.27, 295.97°)
OKLab	oklab(49.12% 0.0035 -0.1768)
OKLCH	oklch(49.12% 0.177 271.1)
XYZ	xyz(14.9142, 11.0301, 52.9622)
Luminance	0.1103 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F52C3 #C3B03F

analogous

#3F94C3 #3F52C3 #6E3FC3

triadic

#3F52C3 #C33F52 #52C33F

tetradic

#3F52C3 #C33F94 #C3B03F #3FC36E

square

#3F52C3 #C33F94 #C3B03F #3FC36E

split-complementary

#3F52C3 #C36E3F #94C33F

monochromatic

#202B67 #2F3E96 #3F52C3 #6E7CD2 #9CA6E0

Accessibility & contrast

On white

6.55

#3F52C3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#3F52C3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F52C3

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F52C3	#FFFFFF	#000000	##FFFFFF
##3F52C3	1.00	6.55	3.21	6.55
#FFFFFF	6.55	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064C7

Deuteranopia (green-blind)

#0058C1

Tritanopia (blue-blind)

#006E82

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3f52c3;
/* rgb */ color: rgb(63, 82, 195);
/* oklch */ color: oklch(49.1% 0.177 271.1);

Tailwind

colors: {
  custom: {
    50: '#8482d6',
    500: '#3f52c3',
    950: '#000000',
  },
}

SCSS

$custom: #3f52c3;
$custom-light: #8482d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f52c3",
  "rgb": {
    "r": 63,
    "g": 82,
    "b": 195
  },
  "hsl": {
    "h": 231.364,
    "s": 52.381,
    "l": 50.588
  },
  "oklch": {
    "l": 0.49117,
    "c": 0.17681,
    "h": 271.1
  },
  "luminance": 0.11031
}

Semantic roles & 50–950 ramp

primary

#3F52C3

secondary

#CCC492

accent

#C74CDC

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F52C3

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

Preview Lab → · Contrast checker → · Palette generator →