#3F3FBC#3F3FBC

#3F3FBC is a mid, vivid blue. Relative luminance 0.082; OKLCH L 45.1% C 0.190 H 275.6°. Best body text is #FFFFFF at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#3F3FBC
RGB	rgb(63, 63, 188)
HSL	hsl(240, 50%, 49%)
HSV	hsv(240, 66%, 74%)
CMYK	cmyk(66.5%, 66.5%, 0%, 26.3%)
CIE-LAB	lab(34.48, 39.37, -65.68)
CIE-LCH	lch(34.48, 76.58, 300.94°)
OKLab	oklab(45.15% 0.0186 -0.1896)
OKLCH	oklch(45.15% 0.19 275.6)
XYZ	xyz(12.9015, 8.2415, 48.4781)
Luminance	0.0824 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3FBC #BCBC3F

analogous

#3F7EBC #3F3FBC #7E3FBC

triadic

#3F3FBC #BC3F3F #3FBC3F

tetradic

#3F3FBC #BC3F7E #BCBC3F #3FBC7E

square

#3F3FBC #BC3F7E #BCBC3F #3FBC7E

split-complementary

#3F3FBC #BC7E3F #7EBC3F

monochromatic

#202060 #30308E #3F3FBC #6B6BCD #9999DD

Accessibility & contrast

On white

7.93

#3F3FBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#3F3FBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3FBC

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3FBC	#FFFFFF	#000000	##FFFFFF
##3F3FBC	1.00	7.93	2.65	7.93
#FFFFFF	7.93	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C0

Deuteranopia (green-blind)

#004BBA

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3f3fbc;
/* rgb */ color: rgb(63, 63, 188);
/* oklch */ color: oklch(45.1% 0.190 275.6);

Tailwind

colors: {
  custom: {
    50: '#8475d1',
    500: '#3f3fbc',
    950: '#000000',
  },
}

SCSS

$custom: #3f3fbc;
$custom-light: #8475d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3fbc",
  "rgb": {
    "r": 63,
    "g": 63,
    "b": 188
  },
  "hsl": {
    "h": 240,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.4515,
    "c": 0.19048,
    "h": 275.6
  },
  "luminance": 0.08243
}

Semantic roles & 50–950 ramp

primary

#3F3FBC

secondary

#C9C98E

accent

#D94ED9

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3F3FBC

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

Preview Lab → · Contrast checker → · Palette generator →