#3F3DB5#3F3DB5

#3F3DB5 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.2% C 0.184 H 276.5°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#3F3DB5
RGB	rgb(63, 61, 181)
HSL	hsl(241, 50%, 47%)
HSV	hsv(241, 66%, 71%)
CMYK	cmyk(65.2%, 66.3%, 0%, 29%)
CIE-LAB	lab(33.41, 38.24, -63.30)
CIE-LCH	lch(33.41, 73.95, 301.14°)
OKLab	oklab(44.19% 0.0209 -0.1826)
OKLCH	oklch(44.19% 0.184 276.5)
XYZ	xyz(12.0564, 7.7294, 44.5637)
Luminance	0.0773 (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

#3F3DB5 #B3B53D

analogous

#3D77B5 #3F3DB5 #7B3DB5

triadic

#3F3DB5 #B53F3D #3DB53F

tetradic

#3F3DB5 #B53D77 #B3B53D #3DB57B

square

#3F3DB5 #B53D77 #B3B53D #3DB57B

split-complementary

#3F3DB5 #B57B3D #77B53D

monochromatic

#1F1E59 #2F2E87 #3F3DB5 #6664CB #9392DA

Accessibility & contrast

On white

8.25

#3F3DB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#3F3DB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3DB5

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3DB5	#FFFFFF	#000000	##FFFFFF
##3F3DB5	1.00	8.25	2.55	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B9

Deuteranopia (green-blind)

#0049B3

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3f3db5;
/* rgb */ color: rgb(63, 61, 181);
/* oklch */ color: oklch(44.2% 0.184 276.5);

Tailwind

colors: {
  custom: {
    50: '#8273cc',
    500: '#3f3db5',
    950: '#000000',
  },
}

SCSS

$custom: #3f3db5;
$custom-light: #8273cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3db5",
  "rgb": {
    "r": 63,
    "g": 61,
    "b": 181
  },
  "hsl": {
    "h": 241,
    "s": 49.587,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44186,
    "c": 0.18378,
    "h": 276.5
  },
  "luminance": 0.0773
}

Semantic roles & 50–950 ramp

primary

#3F3DB5

secondary

#C4C588

accent

#D94FD7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #3F3DB5

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

Preview Lab → · Contrast checker → · Palette generator →