#3F3799#3F3799

#3F3799 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.7% C 0.154 H 280.7°. Best body text is #FFFFFF at 9.47:1 contrast (WCAG AA passes).

Color values

HEX	#3F3799
RGB	rgb(63, 55, 153)
HSL	hsl(245, 47%, 41%)
HSV	hsv(245, 64%, 60%)
CMYK	cmyk(58.8%, 64.1%, 0%, 40%)
CIE-LAB	lab(29.63, 32.57, -52.64)
CIE-LCH	lch(29.63, 61.90, 301.75°)
OKLab	oklab(40.7% 0.0287 -0.1513)
OKLCH	oklch(40.7% 0.154 280.7)
XYZ	xyz(9.1641, 6.0884, 30.8231)
Luminance	0.0609 (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

#3F3799 #919937

analogous

#376099 #3F3799 #703799

triadic

#3F3799 #993F37 #37993F

tetradic

#3F3799 #993760 #919937 #379970

square

#3F3799 #993760 #919937 #379970

split-complementary

#3F3799 #997037 #609937

monochromatic

#1A173F #2C276C #3F3799 #574EBF #827BD0

Accessibility & contrast

On white

9.47

#3F3799 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#3F3799 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3799

9.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3799	#FFFFFF	#000000	##FFFFFF
##3F3799	1.00	9.47	2.22	9.47
#FFFFFF	9.47	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499C

Deuteranopia (green-blind)

#004297

Tritanopia (blue-blind)

#084F63

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3f3799;
/* rgb */ color: rgb(63, 55, 153);
/* oklch */ color: oklch(40.7% 0.154 280.7);

Tailwind

colors: {
  custom: {
    50: '#7d6eb8',
    500: '#3f3799',
    950: '#000000',
  },
}

SCSS

$custom: #3f3799;
$custom-light: #7d6eb8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3799",
  "rgb": {
    "r": 63,
    "g": 55,
    "b": 153
  },
  "hsl": {
    "h": 244.898,
    "s": 47.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.40696,
    "c": 0.15404,
    "h": 280.7
  },
  "luminance": 0.06089
}

Semantic roles & 50–950 ramp

primary

#3F3799

secondary

#B3B973

accent

#D751CC

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0711

muted

#7C7A80

Preview Lab

Preview with #3F3799

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

Preview Lab → · Contrast checker → · Palette generator →