#3F52C8#3F52C8

#3F52C8 is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.5% C 0.184 H 271.1°. Best body text is #FFFFFF at 6.46:1 contrast (WCAG AA passes).

Color values

HEX	#3F52C8
RGB	rgb(63, 82, 200)
HSL	hsl(232, 55%, 52%)
HSV	hsv(232, 69%, 78%)
CMYK	cmyk(68.5%, 59%, 0%, 21.6%)
CIE-LAB	lab(40.02, 31.66, -63.65)
CIE-LCH	lch(40.02, 71.09, 296.45°)
OKLab	oklab(49.52% 0.0035 -0.1835)
OKLCH	oklch(49.52% 0.184 271.1)
XYZ	xyz(15.4890, 11.2600, 55.9895)
Luminance	0.1126 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F52C8 #C8B53F

analogous

#3F97C8 #3F52C8 #713FC8

triadic

#3F52C8 #C83F52 #52C83F

tetradic

#3F52C8 #C83F97 #C8B53F #3FC871

square

#3F52C8 #C83F97 #C8B53F #3FC871

split-complementary

#3F52C8 #C8713F #97C83F

monochromatic

#1F2A6D #2D3C9D #3F52C8 #6F7DD6 #9EA8E3

Accessibility & contrast

On white

6.46

#3F52C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#3F52C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F52C8

6.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F52C8	#FFFFFF	#000000	##FFFFFF
##3F52C8	1.00	6.46	3.25	6.46
#FFFFFF	6.46	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0065CC

Deuteranopia (green-blind)

#0058C6

Tritanopia (blue-blind)

#006F85

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3f52c8;
/* rgb */ color: rgb(63, 82, 200);
/* oklch */ color: oklch(49.5% 0.184 271.1);

Tailwind

colors: {
  custom: {
    50: '#8582da',
    500: '#3f52c8',
    950: '#000000',
  },
}

SCSS

$custom: #3f52c8;
$custom-light: #8582da;
$custom-dark: #000000;

JSON

{
  "hex": "#3f52c8",
  "rgb": {
    "r": 63,
    "g": 82,
    "b": 200
  },
  "hsl": {
    "h": 231.679,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.49523,
    "c": 0.18351,
    "h": 271.1
  },
  "luminance": 0.11261
}

Semantic roles & 50–950 ramp

primary

#3F52C8

secondary

#D0C793

accent

#CA49DF

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F52C8

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

Preview Lab → · Contrast checker → · Palette generator →