#3F31C2#3F31C2

#3F31C2 is a dark, highly saturated blue. Relative luminance 0.071; OKLCH L 43.6% C 0.213 H 277.2°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#3F31C2
RGB	rgb(63, 49, 194)
HSL	hsl(246, 60%, 48%)
HSV	hsv(246, 75%, 76%)
CMYK	cmyk(67.5%, 74.7%, 0%, 23.9%)
CIE-LAB	lab(32.14, 49.34, -73.06)
CIE-LCH	lch(32.14, 88.16, 304.03°)
OKLab	oklab(43.65% 0.0267 -0.2111)
OKLCH	oklch(43.65% 0.213 277.2)
XYZ	xyz(12.8827, 7.1473, 51.7291)
Luminance	0.0715 (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

#3F31C2 #B4C231

analogous

#316CC2 #3F31C2 #8731C2

triadic

#3F31C2 #C23F31 #31C23F

tetradic

#3F31C2 #C2316C #B4C231 #31C287

square

#3F31C2 #C2316C #B4C231 #31C287

split-complementary

#3F31C2 #C28731 #6CC231

monochromatic

#1F1860 #2F2591 #3F31C2 #675BD6 #948CE2

Accessibility & contrast

On white

8.64

#3F31C2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#3F31C2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F31C2

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F31C2	#FFFFFF	#000000	##FFFFFF
##3F31C2	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052C6

Deuteranopia (green-blind)

#0045BF

Tritanopia (blue-blind)

#005B77

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3f31c2;
/* rgb */ color: rgb(63, 49, 194);
/* oklch */ color: oklch(43.6% 0.213 277.2);

Tailwind

colors: {
  custom: {
    50: '#866cd6',
    500: '#3f31c2',
    950: '#000000',
  },
}

SCSS

$custom: #3f31c2;
$custom-light: #866cd6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f31c2",
  "rgb": {
    "r": 63,
    "g": 49,
    "b": 194
  },
  "hsl": {
    "h": 245.793,
    "s": 59.671,
    "l": 47.647
  },
  "oklch": {
    "l": 0.43645,
    "c": 0.21278,
    "h": 277.2
  },
  "luminance": 0.07148
}

Semantic roles & 50–950 ramp

primary

#3F31C2

secondary

#C5CC83

accent

#E345D4

background

#F9F6FD

surface

#F1EBFA

border

#CBC6D3

text

#0D0714

muted

#7E7A83

Preview Lab

Preview with #3F31C2

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

Preview Lab → · Contrast checker → · Palette generator →