#3F3FAD#3F3FAD

#3F3FAD is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.8% C 0.171 H 276.7°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#3F3FAD
RGB	rgb(63, 63, 173)
HSL	hsl(240, 47%, 46%)
HSV	hsv(240, 64%, 68%)
CMYK	cmyk(63.6%, 63.6%, 0%, 32.2%)
CIE-LAB	lab(33.20, 34.30, -58.90)
CIE-LCH	lch(33.20, 68.15, 300.21°)
OKLab	oklab(43.82% 0.02 -0.1697)
OKLCH	oklch(43.82% 0.171 276.7)
XYZ	xyz(11.3678, 7.6280, 40.4004)
Luminance	0.0763 (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

#3F3FAD #ADAD3F

analogous

#3F76AD #3F3FAD #763FAD

triadic

#3F3FAD #AD3F3F #3FAD3F

tetradic

#3F3FAD #AD3F76 #ADAD3F #3FAD76

square

#3F3FAD #AD3F76 #ADAD3F #3FAD76

split-complementary

#3F3FAD #AD763F #76AD3F

monochromatic

#1E1E53 #2F2F80 #3F3FAD #6363C6 #9090D7

Accessibility & contrast

On white

8.31

#3F3FAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#3F3FAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3FAD

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3FAD	#FFFFFF	#000000	##FFFFFF
##3F3FAD	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B1

Deuteranopia (green-blind)

#0049AB

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f3fad;
/* rgb */ color: rgb(63, 63, 173);
/* oklch */ color: oklch(43.8% 0.171 276.7);

Tailwind

colors: {
  custom: {
    50: '#8174c6',
    500: '#3f3fad',
    950: '#000000',
  },
}

SCSS

$custom: #3f3fad;
$custom-light: #8174c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3fad",
  "rgb": {
    "r": 63,
    "g": 63,
    "b": 173
  },
  "hsl": {
    "h": 240,
    "s": 46.61,
    "l": 46.275
  },
  "oklch": {
    "l": 0.43816,
    "c": 0.17084,
    "h": 276.7
  },
  "luminance": 0.07629
}

Semantic roles & 50–950 ramp

primary

#3F3FAD

secondary

#C2C286

accent

#D652D6

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3F3FAD

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

Preview Lab → · Contrast checker → · Palette generator →