#3F3CB5#3F3CB5

#3F3CB5 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 44.0% C 0.185 H 276.7°. Best body text is #FFFFFF at 8.32:1 contrast (WCAG AA passes).

Color values

HEX	#3F3CB5
RGB	rgb(63, 60, 181)
HSL	hsl(241, 50%, 47%)
HSV	hsv(241, 67%, 71%)
CMYK	cmyk(65.2%, 66.9%, 0%, 29%)
CIE-LAB	lab(33.19, 38.85, -63.67)
CIE-LCH	lch(33.19, 74.58, 301.39°)
OKLab	oklab(44.02% 0.0217 -0.1837)
OKLCH	oklch(44.02% 0.185 276.7)
XYZ	xyz(12.0035, 7.6237, 44.5461)
Luminance	0.0762 (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

#3F3CB5 #B2B53C

analogous

#3C75B5 #3F3CB5 #7C3CB5

triadic

#3F3CB5 #B53F3C #3CB53F

tetradic

#3F3CB5 #B53C75 #B2B53C #3CB57C

square

#3F3CB5 #B53C75 #B2B53C #3CB57C

split-complementary

#3F3CB5 #B57C3C #75B53C

monochromatic

#1F1E59 #2F2D87 #3F3CB5 #6663CB #9391DB

Accessibility & contrast

On white

8.32

#3F3CB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#3F3CB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3CB5

8.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3CB5	#FFFFFF	#000000	##FFFFFF
##3F3CB5	1.00	8.32	2.53	8.32
#FFFFFF	8.32	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B9

Deuteranopia (green-blind)

#0049B3

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f3cb5;
/* rgb */ color: rgb(63, 60, 181);
/* oklch */ color: oklch(44.0% 0.185 276.7);

Tailwind

colors: {
  custom: {
    50: '#8272cc',
    500: '#3f3cb5',
    950: '#000000',
  },
}

SCSS

$custom: #3f3cb5;
$custom-light: #8272cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3cb5",
  "rgb": {
    "r": 63,
    "g": 60,
    "b": 181
  },
  "hsl": {
    "h": 241.488,
    "s": 50.207,
    "l": 47.255
  },
  "oklch": {
    "l": 0.44021,
    "c": 0.18494,
    "h": 276.7
  },
  "luminance": 0.07625
}

Semantic roles & 50–950 ramp

primary

#3F3CB5

secondary

#C4C687

accent

#DA4ED6

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #3F3CB5

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

Preview Lab → · Contrast checker → · Palette generator →