#3F31AC#3F31AC

#3F31AC is a dark, vivid blue. Relative luminance 0.062; OKLCH L 41.5% C 0.186 H 279.7°. Best body text is #FFFFFF at 9.35:1 contrast (WCAG AA passes).

Color values

HEX	#3F31AC
RGB	rgb(63, 49, 172)
HSL	hsl(247, 56%, 43%)
HSV	hsv(247, 72%, 67%)
CMYK	cmyk(63.4%, 71.5%, 0%, 32.5%)
CIE-LAB	lab(29.99, 42.39, -63.55)
CIE-LCH	lch(29.99, 76.39, 303.70°)
OKLab	oklab(41.47% 0.0312 -0.1833)
OKLCH	oklch(41.47% 0.186 279.7)
XYZ	xyz(10.5922, 6.2311, 39.6663)
Luminance	0.0623 (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

#3F31AC #9EAC31

analogous

#3160AC #3F31AC #7C31AC

triadic

#3F31AC #AC3F31 #31AC3F

tetradic

#3F31AC #AC3160 #9EAC31 #31AC7C

square

#3F31AC #AC3160 #9EAC31 #31AC7C

split-complementary

#3F31AC #AC7C31 #60AC31

monochromatic

#1C164D #2E237C #3F31AC #5C4ECC #887DDA

Accessibility & contrast

On white

9.35

#3F31AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#3F31AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F31AC

9.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F31AC	#FFFFFF	#000000	##FFFFFF
##3F31AC	1.00	9.35	2.25	9.35
#FFFFFF	9.35	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BB0

Deuteranopia (green-blind)

#0042AA

Tritanopia (blue-blind)

#00536B

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3f31ac;
/* rgb */ color: rgb(63, 49, 172);
/* oklch */ color: oklch(41.5% 0.186 279.7);

Tailwind

colors: {
  custom: {
    50: '#826bc6',
    500: '#3f31ac',
    950: '#000000',
  },
}

SCSS

$custom: #3f31ac;
$custom-light: #826bc6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f31ac",
  "rgb": {
    "r": 63,
    "g": 49,
    "b": 172
  },
  "hsl": {
    "h": 246.829,
    "s": 55.656,
    "l": 43.333
  },
  "oklch": {
    "l": 0.4147,
    "c": 0.18596,
    "h": 279.7
  },
  "luminance": 0.06232
}

Semantic roles & 50–950 ramp

primary

#3F31AC

secondary

#BAC376

accent

#DF49CE

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3F31AC

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

Preview Lab → · Contrast checker → · Palette generator →