#3F3FBD#3F3FBD

#3F3FBD is a mid, vivid blue. Relative luminance 0.083; OKLCH L 45.2% C 0.192 H 275.5°. Best body text is #FFFFFF at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#3F3FBD
RGB	rgb(63, 63, 189)
HSL	hsl(240, 50%, 49%)
HSV	hsv(240, 67%, 74%)
CMYK	cmyk(66.7%, 66.7%, 0%, 25.9%)
CIE-LAB	lab(34.57, 39.71, -66.13)
CIE-LCH	lch(34.57, 77.13, 300.98°)
OKLab	oklab(45.24% 0.0185 -0.1909)
OKLCH	oklch(45.24% 0.192 275.5)
XYZ	xyz(13.0097, 8.2848, 49.0478)
Luminance	0.0829 (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

#3F3FBD #BDBD3F

analogous

#3F7EBD #3F3FBD #7E3FBD

triadic

#3F3FBD #BD3F3F #3FBD3F

tetradic

#3F3FBD #BD3F7E #BDBD3F #3FBD7E

square

#3F3FBD #BD3F7E #BDBD3F #3FBD7E

split-complementary

#3F3FBD #BD7E3F #7EBD3F

monochromatic

#202061 #30308F #3F3FBD #6B6BCE #9999DD

Accessibility & contrast

On white

7.90

#3F3FBD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#3F3FBD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3FBD

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3FBD	#FFFFFF	#000000	##FFFFFF
##3F3FBD	1.00	7.90	2.66	7.90
#FFFFFF	7.90	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C1

Deuteranopia (green-blind)

#004CBB

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3f3fbd;
/* rgb */ color: rgb(63, 63, 189);
/* oklch */ color: oklch(45.2% 0.192 275.5);

Tailwind

colors: {
  custom: {
    50: '#8475d2',
    500: '#3f3fbd',
    950: '#000000',
  },
}

SCSS

$custom: #3f3fbd;
$custom-light: #8475d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3fbd",
  "rgb": {
    "r": 63,
    "g": 63,
    "b": 189
  },
  "hsl": {
    "h": 240,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.45241,
    "c": 0.19177,
    "h": 275.5
  },
  "luminance": 0.08286
}

Semantic roles & 50–950 ramp

primary

#3F3FBD

secondary

#C9C98F

accent

#DA4EDA

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3F3FBD

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

Preview Lab → · Contrast checker → · Palette generator →