#3F3D99#3F3D99

#3F3D99 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.8% C 0.146 H 279.0°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#3F3D99
RGB	rgb(63, 61, 153)
HSL	hsl(241, 43%, 42%)
HSV	hsv(241, 60%, 60%)
CMYK	cmyk(58.8%, 60.1%, 0%, 40%)
CIE-LAB	lab(31.10, 28.76, -50.26)
CIE-LCH	lch(31.10, 57.91, 299.78°)
OKLab	oklab(41.77% 0.0228 -0.1443)
OKLCH	oklch(41.77% 0.146 279)
XYZ	xyz(9.4666, 6.6935, 30.9239)
Luminance	0.0669 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 7.34

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3D99 #97993D

analogous

#3D6999 #3F3D99 #6D3D99

triadic

#3F3D99 #993F3D #3D993F

tetradic

#3F3D99 #993D69 #97993D #3D996D

square

#3F3D99 #993D69 #97993D #3D996D

split-complementary

#3F3D99 #996D3D #69993D

monochromatic

#1B1A41 #2D2C6D #3F3D99 #5957BC #8583CE

Accessibility & contrast

On white

8.98

#3F3D99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#3F3D99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3D99

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3D99	#FFFFFF	#000000	##FFFFFF
##3F3D99	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9C

Deuteranopia (green-blind)

#004697

Tritanopia (blue-blind)

#065365

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3f3d99;
/* rgb */ color: rgb(63, 61, 153);
/* oklch */ color: oklch(41.8% 0.146 279.0);

Tailwind

colors: {
  custom: {
    50: '#7d72b8',
    500: '#3f3d99',
    950: '#000000',
  },
}

SCSS

$custom: #3f3d99;
$custom-light: #7d72b8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3d99",
  "rgb": {
    "r": 63,
    "g": 61,
    "b": 153
  },
  "hsl": {
    "h": 241.304,
    "s": 42.991,
    "l": 41.961
  },
  "oklch": {
    "l": 0.41771,
    "c": 0.14608,
    "h": 279
  },
  "luminance": 0.06694
}

Semantic roles & 50–950 ramp

primary

#3F3D99

secondary

#B6B87A

accent

#D355D0

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0A0811

muted

#7C7B80

Preview Lab

Preview with #3F3D99

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

Preview Lab → · Contrast checker → · Palette generator →