#3F3391#3F3391

#3F3391 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.3% C 0.148 H 283.0°. Best body text is #FFFFFF at 10.03:1 contrast (WCAG AA passes).

Color values

HEX	#3F3391
RGB	rgb(63, 51, 145)
HSL	hsl(248, 48%, 38%)
HSV	hsv(248, 65%, 57%)
CMYK	cmyk(56.6%, 64.8%, 0%, 43.1%)
CIE-LAB	lab(28.03, 32.43, -50.35)
CIE-LCH	lch(28.03, 59.89, 302.78°)
OKLab	oklab(39.32% 0.0333 -0.1446)
OKLCH	oklch(39.32% 0.148 283)
XYZ	xyz(8.3430, 5.4682, 27.3984)
Luminance	0.0547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3391 #859133

analogous

#335691 #3F3391 #6E3391

triadic

#3F3391 #913F33 #33913F

tetradic

#3F3391 #913356 #859133 #33916E

square

#3F3391 #913356 #859133 #33916E

split-complementary

#3F3391 #916E33 #569133

monochromatic

#181336 #2B2364 #3F3391 #5344BD #7D71CD

Accessibility & contrast

On white

10.03

#3F3391 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#3F3391 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3391

10.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3391	#FFFFFF	#000000	##FFFFFF
##3F3391	1.00	10.03	2.09	10.03
#FFFFFF	10.03	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004594

Deuteranopia (green-blind)

#003F8F

Tritanopia (blue-blind)

#184A5D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3f3391;
/* rgb */ color: rgb(63, 51, 145);
/* oklch */ color: oklch(39.3% 0.148 283.0);

Tailwind

colors: {
  custom: {
    50: '#7c6bb2',
    500: '#3f3391',
    950: '#000000',
  },
}

SCSS

$custom: #3f3391;
$custom-light: #7c6bb2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3391",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 145
  },
  "hsl": {
    "h": 247.66,
    "s": 47.959,
    "l": 38.431
  },
  "oklch": {
    "l": 0.39319,
    "c": 0.14842,
    "h": 283
  },
  "luminance": 0.05469
}

Semantic roles & 50–950 ramp

primary

#3F3391

secondary

#ACB56B

accent

#D850C6

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #3F3391

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

Preview Lab → · Contrast checker → · Palette generator →