#3F52C5#3F52C5

#3F52C5 is a mid, vivid blue. Relative luminance 0.111; OKLCH L 49.3% C 0.179 H 271.1°. Best body text is #FFFFFF at 6.51:1 contrast (WCAG AA passes).

Color values

HEX	#3F52C5
RGB	rgb(63, 82, 197)
HSL	hsl(231, 54%, 51%)
HSV	hsv(231, 68%, 77%)
CMYK	cmyk(68%, 58.4%, 0%, 22.7%)
CIE-LAB	lab(39.78, 30.60, -62.29)
CIE-LCH	lch(39.78, 69.40, 296.17°)
OKLab	oklab(49.28% 0.0035 -0.1795)
OKLCH	oklch(49.28% 0.18 271.1)
XYZ	xyz(15.1418, 11.1211, 54.1611)
Luminance	0.1112 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F52C5 #C5B23F

analogous

#3F95C5 #3F52C5 #6F3FC5

triadic

#3F52C5 #C53F52 #52C53F

tetradic

#3F52C5 #C53F95 #C5B23F #3FC56F

square

#3F52C5 #C53F95 #C5B23F #3FC56F

split-complementary

#3F52C5 #C56F3F #95C53F

monochromatic

#202A6A #2E3D99 #3F52C5 #6E7CD3 #9DA7E1

Accessibility & contrast

On white

6.51

#3F52C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#3F52C5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F52C5

6.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F52C5	#FFFFFF	#000000	##FFFFFF
##3F52C5	1.00	6.51	3.22	6.51
#FFFFFF	6.51	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064C9

Deuteranopia (green-blind)

#0058C3

Tritanopia (blue-blind)

#006E83

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3f52c5;
/* rgb */ color: rgb(63, 82, 197);
/* oklch */ color: oklch(49.3% 0.179 271.1);

Tailwind

colors: {
  custom: {
    50: '#8482d7',
    500: '#3f52c5',
    950: '#000000',
  },
}

SCSS

$custom: #3f52c5;
$custom-light: #8482d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f52c5",
  "rgb": {
    "r": 63,
    "g": 82,
    "b": 197
  },
  "hsl": {
    "h": 231.493,
    "s": 53.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.49279,
    "c": 0.1795,
    "h": 271.1
  },
  "luminance": 0.11123
}

Semantic roles & 50–950 ramp

primary

#3F52C5

secondary

#CEC592

accent

#C84BDD

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F52C5

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

Preview Lab → · Contrast checker → · Palette generator →