#3F348C#3F348C

#3F348C is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.1% C 0.140 H 283.5°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#3F348C
RGB	rgb(63, 52, 140)
HSL	hsl(248, 46%, 38%)
HSV	hsv(248, 63%, 55%)
CMYK	cmyk(55%, 62.9%, 0%, 45.1%)
CIE-LAB	lab(27.86, 30.16, -47.54)
CIE-LCH	lch(27.86, 56.30, 302.39°)
OKLab	oklab(39.07% 0.0327 -0.1364)
OKLCH	oklch(39.07% 0.14 283.5)
XYZ	xyz(8.0101, 5.4057, 25.4272)
Luminance	0.0541 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F348C #818C34

analogous

#34558C #3F348C #6B348C

triadic

#3F348C #8C3F34 #348C3F

tetradic

#3F348C #8C3455 #818C34 #348C6B

square

#3F348C #8C3455 #818C34 #348C6B

split-complementary

#3F348C #8C6B34 #558C34

monochromatic

#171333 #2B235F #3F348C #5345B9 #7C70CA

Accessibility & contrast

On white

10.09

#3F348C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#3F348C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F348C

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F348C	#FFFFFF	#000000	##FFFFFF
##3F348C	1.00	10.09	2.08	10.09
#FFFFFF	10.09	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458F

Deuteranopia (green-blind)

#003F8A

Tritanopia (blue-blind)

#1E495B

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3f348c;
/* rgb */ color: rgb(63, 52, 140);
/* oklch */ color: oklch(39.1% 0.140 283.5);

Tailwind

colors: {
  custom: {
    50: '#7b6cae',
    500: '#3f348c',
    950: '#000000',
  },
}

SCSS

$custom: #3f348c;
$custom-light: #7b6cae;
$custom-dark: #000000;

JSON

{
  "hex": "#3f348c",
  "rgb": {
    "r": 63,
    "g": 52,
    "b": 140
  },
  "hsl": {
    "h": 247.5,
    "s": 45.833,
    "l": 37.647
  },
  "oklch": {
    "l": 0.39069,
    "c": 0.14022,
    "h": 283.5
  },
  "luminance": 0.05406
}

Semantic roles & 50–950 ramp

primary

#3F348C

secondary

#A9B26A

accent

#D552C5

background

#F7F6FA

surface

#EEEBF4

border

#C9C6CE

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #3F348C

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

Preview Lab → · Contrast checker → · Palette generator →