#3F3FC1#3F3FC1

#3F3FC1 is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.6% C 0.197 H 275.3°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#3F3FC1
RGB	rgb(63, 63, 193)
HSL	hsl(240, 51%, 50%)
HSV	hsv(240, 67%, 76%)
CMYK	cmyk(67.4%, 67.4%, 0%, 24.3%)
CIE-LAB	lab(34.92, 41.05, -67.89)
CIE-LCH	lch(34.92, 79.34, 301.16°)
OKLab	oklab(45.61% 0.0181 -0.196)
OKLCH	oklch(45.61% 0.197 275.3)
XYZ	xyz(13.4499, 8.4608, 51.3660)
Luminance	0.0846 (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

#3F3FC1 #C1C13F

analogous

#3F80C1 #3F3FC1 #803FC1

triadic

#3F3FC1 #C13F3F #3FC13F

tetradic

#3F3FC1 #C13F80 #C1C13F #3FC180

square

#3F3FC1 #C13F80 #C1C13F #3FC180

split-complementary

#3F3FC1 #C1803F #80C13F

monochromatic

#212165 #303093 #3F3FC1 #6D6DD0 #9C9CDF

Accessibility & contrast

On white

7.80

#3F3FC1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#3F3FC1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3FC1

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3FC1	#FFFFFF	#000000	##FFFFFF
##3F3FC1	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C5

Deuteranopia (green-blind)

#004CBF

Tritanopia (blue-blind)

#00627B

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3f3fc1;
/* rgb */ color: rgb(63, 63, 193);
/* oklch */ color: oklch(45.6% 0.197 275.3);

Tailwind

colors: {
  custom: {
    50: '#8575d5',
    500: '#3f3fc1',
    950: '#000000',
  },
}

SCSS

$custom: #3f3fc1;
$custom-light: #8575d5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3fc1",
  "rgb": {
    "r": 63,
    "g": 63,
    "b": 193
  },
  "hsl": {
    "h": 240,
    "s": 51.181,
    "l": 50.196
  },
  "oklch": {
    "l": 0.45607,
    "c": 0.19687,
    "h": 275.3
  },
  "luminance": 0.08462
}

Semantic roles & 50–950 ramp

primary

#3F3FC1

secondary

#CBCB91

accent

#DB4DDB

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3F3FC1

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

Preview Lab → · Contrast checker → · Palette generator →