#3F52BA#3F52BA

#3F52BA is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.4% C 0.165 H 271.1°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#3F52BA
RGB	rgb(63, 82, 186)
HSL	hsl(231, 49%, 49%)
HSV	hsv(231, 66%, 73%)
CMYK	cmyk(66.1%, 55.9%, 0%, 27.1%)
CIE-LAB	lab(38.96, 26.71, -57.21)
CIE-LCH	lch(38.96, 63.13, 295.02°)
OKLab	oklab(48.4% 0.0032 -0.1645)
OKLCH	oklch(48.4% 0.165 271.1)
XYZ	xyz(13.9271, 10.6353, 47.7637)
Luminance	0.1064 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F52BA #BAA73F

analogous

#3F90BA #3F52BA #6A3FBA

triadic

#3F52BA #BA3F52 #52BA3F

tetradic

#3F52BA #BA3F90 #BAA73F #3FBA6A

square

#3F52BA #BA3F90 #BAA73F #3FBA6A

split-complementary

#3F52BA #BA6A3F #90BA3F

monochromatic

#202A5F #303E8C #3F52BA #6A79CC #97A2DC

Accessibility & contrast

On white

6.71

#3F52BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3F52BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F52BA

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F52BA	#FFFFFF	#000000	##FFFFFF
##3F52BA	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061BE

Deuteranopia (green-blind)

#0056B8

Tritanopia (blue-blind)

#006B7E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f52ba;
/* rgb */ color: rgb(63, 82, 186);
/* oklch */ color: oklch(48.4% 0.165 271.1);

Tailwind

colors: {
  custom: {
    50: '#8282cf',
    500: '#3f52ba',
    950: '#000000',
  },
}

SCSS

$custom: #3f52ba;
$custom-light: #8282cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f52ba",
  "rgb": {
    "r": 63,
    "g": 82,
    "b": 186
  },
  "hsl": {
    "h": 230.732,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.48404,
    "c": 0.16456,
    "h": 271.1
  },
  "luminance": 0.10637
}

Semantic roles & 50–950 ramp

primary

#3F52BA

secondary

#C8BF8D

accent

#C44FD9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #3F52BA

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

Preview Lab → · Contrast checker → · Palette generator →