#3F3FAC#3F3FAC

#3F3FAC is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.7% C 0.170 H 276.8°. Best body text is #FFFFFF at 8.34:1 contrast (WCAG AA passes).

Color values

HEX	#3F3FAC
RGB	rgb(63, 63, 172)
HSL	hsl(240, 46%, 46%)
HSV	hsv(240, 63%, 67%)
CMYK	cmyk(63.4%, 63.4%, 0%, 32.5%)
CIE-LAB	lab(33.11, 33.96, -58.43)
CIE-LCH	lch(33.11, 67.58, 300.16°)
OKLab	oklab(43.73% 0.02 -0.1683)
OKLCH	oklch(43.73% 0.17 276.8)
XYZ	xyz(11.2714, 7.5894, 39.8927)
Luminance	0.0759 (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

#3F3FAC #ACAC3F

analogous

#3F75AC #3F3FAC #753FAC

triadic

#3F3FAC #AC3F3F #3FAC3F

tetradic

#3F3FAC #AC3F75 #ACAC3F #3FAC75

square

#3F3FAC #AC3F75 #ACAC3F #3FAC75

split-complementary

#3F3FAC #AC753F #75AC3F

monochromatic

#1E1E52 #2F2F7F #3F3FAC #6363C6 #8F8FD6

Accessibility & contrast

On white

8.34

#3F3FAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#3F3FAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3FAC

8.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3FAC	#FFFFFF	#000000	##FFFFFF
##3F3FAC	1.00	8.34	2.52	8.34
#FFFFFF	8.34	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053AF

Deuteranopia (green-blind)

#0049AA

Tritanopia (blue-blind)

#005A6F

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f3fac;
/* rgb */ color: rgb(63, 63, 172);
/* oklch */ color: oklch(43.7% 0.170 276.8);

Tailwind

colors: {
  custom: {
    50: '#8074c6',
    500: '#3f3fac',
    950: '#000000',
  },
}

SCSS

$custom: #3f3fac;
$custom-light: #8074c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3fac",
  "rgb": {
    "r": 63,
    "g": 63,
    "b": 172
  },
  "hsl": {
    "h": 240,
    "s": 46.383,
    "l": 46.078
  },
  "oklch": {
    "l": 0.4373,
    "c": 0.1695,
    "h": 276.8
  },
  "luminance": 0.0759
}

Semantic roles & 50–950 ramp

primary

#3F3FAC

secondary

#C1C186

accent

#D652D6

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3F3FAC

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

Preview Lab → · Contrast checker → · Palette generator →