#3F31C1#3F31C1

#3F31C1 is a dark, highly saturated blue. Relative luminance 0.071; OKLCH L 43.5% C 0.212 H 277.3°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#3F31C1
RGB	rgb(63, 49, 193)
HSL	hsl(246, 60%, 47%)
HSV	hsv(246, 75%, 76%)
CMYK	cmyk(67.4%, 74.6%, 0%, 24.3%)
CIE-LAB	lab(32.04, 49.03, -72.64)
CIE-LCH	lch(32.04, 87.63, 304.02°)
OKLab	oklab(43.54% 0.0269 -0.2099)
OKLCH	oklch(43.54% 0.212 277.3)
XYZ	xyz(12.7707, 7.1025, 51.1397)
Luminance	0.0710 (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

#3F31C1 #B3C131

analogous

#316BC1 #3F31C1 #8731C1

triadic

#3F31C1 #C13F31 #31C13F

tetradic

#3F31C1 #C1316B #B3C131 #31C187

square

#3F31C1 #C1316B #B3C131 #31C187

split-complementary

#3F31C1 #C18731 #6BC131

monochromatic

#1F185F #2F2590 #3F31C1 #665AD5 #938BE2

Accessibility & contrast

On white

8.67

#3F31C1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#3F31C1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F31C1

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F31C1	#FFFFFF	#000000	##FFFFFF
##3F31C1	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051C5

Deuteranopia (green-blind)

#0045BE

Tritanopia (blue-blind)

#005A77

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f31c1;
/* rgb */ color: rgb(63, 49, 193);
/* oklch */ color: oklch(43.5% 0.212 277.3);

Tailwind

colors: {
  custom: {
    50: '#866cd5',
    500: '#3f31c1',
    950: '#000000',
  },
}

SCSS

$custom: #3f31c1;
$custom-light: #866cd5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f31c1",
  "rgb": {
    "r": 63,
    "g": 49,
    "b": 193
  },
  "hsl": {
    "h": 245.833,
    "s": 59.504,
    "l": 47.451
  },
  "oklch": {
    "l": 0.43544,
    "c": 0.21158,
    "h": 277.3
  },
  "luminance": 0.07104
}

Semantic roles & 50–950 ramp

primary

#3F31C1

secondary

#C4CC82

accent

#E345D3

background

#F9F6FD

surface

#F1EBFA

border

#CBC6D3

text

#0D0714

muted

#7E7A83

Preview Lab

Preview with #3F31C1

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

Preview Lab → · Contrast checker → · Palette generator →