#3F3FC0#3F3FC0

#3F3FC0 is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.5% C 0.196 H 275.3°. Best body text is #FFFFFF at 7.83:1 contrast (WCAG AA passes).

Color values

HEX	#3F3FC0
RGB	rgb(63, 63, 192)
HSL	hsl(240, 51%, 50%)
HSV	hsv(240, 67%, 75%)
CMYK	cmyk(67.2%, 67.2%, 0%, 24.7%)
CIE-LAB	lab(34.84, 40.72, -67.45)
CIE-LCH	lch(34.84, 78.79, 301.12°)
OKLab	oklab(45.52% 0.0182 -0.1947)
OKLCH	oklch(45.52% 0.196 275.3)
XYZ	xyz(13.3387, 8.4164, 50.7805)
Luminance	0.0842 (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

#3F3FC0 #C0C03F

analogous

#3F7FC0 #3F3FC0 #7F3FC0

triadic

#3F3FC0 #C03F3F #3FC03F

tetradic

#3F3FC0 #C03F80 #C0C03F #3FC080

square

#3F3FC0 #C03F80 #C0C03F #3FC080

split-complementary

#3F3FC0 #C0803F #80C03F

monochromatic

#212164 #303092 #3F3FC0 #6D6DCF #9B9BDE

Accessibility & contrast

On white

7.83

#3F3FC0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#3F3FC0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3FC0

7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3FC0	#FFFFFF	#000000	##FFFFFF
##3F3FC0	1.00	7.83	2.68	7.83
#FFFFFF	7.83	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C4

Deuteranopia (green-blind)

#004CBE

Tritanopia (blue-blind)

#00617A

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3f3fc0;
/* rgb */ color: rgb(63, 63, 192);
/* oklch */ color: oklch(45.5% 0.196 275.3);

Tailwind

colors: {
  custom: {
    50: '#8475d4',
    500: '#3f3fc0',
    950: '#000000',
  },
}

SCSS

$custom: #3f3fc0;
$custom-light: #8475d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3fc0",
  "rgb": {
    "r": 63,
    "g": 63,
    "b": 192
  },
  "hsl": {
    "h": 240,
    "s": 50.588,
    "l": 50
  },
  "oklch": {
    "l": 0.45515,
    "c": 0.1956,
    "h": 275.3
  },
  "luminance": 0.08418
}

Semantic roles & 50–950 ramp

primary

#3F3FC0

secondary

#CACA91

accent

#DA4EDA

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3F3FC0

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

Preview Lab → · Contrast checker → · Palette generator →