#3F31CA#3F31CA

#3F31CA is a dark, highly saturated blue. Relative luminance 0.075; OKLCH L 44.5% C 0.222 H 276.4°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#3F31CA
RGB	rgb(63, 49, 202)
HSL	hsl(245, 61%, 49%)
HSV	hsv(245, 76%, 79%)
CMYK	cmyk(68.8%, 75.7%, 0%, 20.8%)
CIE-LAB	lab(32.95, 51.82, -76.40)
CIE-LCH	lch(32.95, 92.31, 304.15°)
OKLab	oklab(44.46% 0.025 -0.2208)
OKLCH	oklch(44.46% 0.222 276.4)
XYZ	xyz(13.8054, 7.5164, 56.5889)
Luminance	0.0752 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 3.19

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F31CA #BCCA31

analogous

#3170CA #3F31CA #8C31CA

triadic

#3F31CA #CA3F31 #31CA3F

tetradic

#3F31CA #CA3170 #BCCA31 #31CA8C

square

#3F31CA #CA3170 #BCCA31 #31CA8C

split-complementary

#3F31CA #CA8C31 #70CA31

monochromatic

#201967 #302599 #3F31CA #6B60D8 #9991E4

Accessibility & contrast

On white

8.39

#3F31CA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#3F31CA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F31CA

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F31CA	#FFFFFF	#000000	##FFFFFF
##3F31CA	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054CE

Deuteranopia (green-blind)

#0047C7

Tritanopia (blue-blind)

#005E7C

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3f31ca;
/* rgb */ color: rgb(63, 49, 202);
/* oklch */ color: oklch(44.5% 0.222 276.4);

Tailwind

colors: {
  custom: {
    50: '#886cdc',
    500: '#3f31ca',
    950: '#000000',
  },
}

SCSS

$custom: #3f31ca;
$custom-light: #886cdc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f31ca",
  "rgb": {
    "r": 63,
    "g": 49,
    "b": 202
  },
  "hsl": {
    "h": 245.49,
    "s": 60.956,
    "l": 49.216
  },
  "oklch": {
    "l": 0.44462,
    "c": 0.22222,
    "h": 276.4
  },
  "luminance": 0.07518
}

Semantic roles & 50–950 ramp

primary

#3F31CA

secondary

#C9CF88

accent

#E444D5

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3F31CA

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

Preview Lab → · Contrast checker → · Palette generator →