#3927B0#3927B0

#3927B0 is a dark, highly saturated blue. Relative luminance 0.055; OKLCH L 40.1% C 0.202 H 278.0°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#3927B0
RGB	rgb(57, 39, 176)
HSL	hsl(248, 64%, 42%)
HSV	hsv(248, 78%, 69%)
CMYK	cmyk(67.6%, 77.8%, 0%, 31%)
CIE-LAB	lab(27.99, 48.35, -69.25)
CIE-LCH	lch(27.99, 84.46, 304.92°)
OKLab	oklab(40.06% 0.0283 -0.2)
OKLCH	oklch(40.06% 0.202 278)
XYZ	xyz(10.2468, 5.4546, 41.5787)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3927B0 #9EB027

analogous

#275AB0 #3927B0 #7D27B0

triadic

#3927B0 #B03927 #27B039

tetradic

#3927B0 #B0275A #9EB027 #27B07D

square

#3927B0 #B0275A #9EB027 #27B07D

split-complementary

#3927B0 #B07D27 #5AB027

monochromatic

#19114C #291C7E #3927B0 #5340D5 #8072E0

Accessibility & contrast

On white

10.04

#3927B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#3927B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3927B0

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3927B0	#FFFFFF	#000000	##FFFFFF
##3927B0	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047B4

Deuteranopia (green-blind)

#003CAE

Tritanopia (blue-blind)

#00506B

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3927b0;
/* rgb */ color: rgb(57, 39, 176);
/* oklch */ color: oklch(40.1% 0.202 278.0);

Tailwind

colors: {
  custom: {
    50: '#8065c9',
    500: '#3927b0',
    950: '#000000',
  },
}

SCSS

$custom: #3927b0;
$custom-light: #8065c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3927b0",
  "rgb": {
    "r": 57,
    "g": 39,
    "b": 176
  },
  "hsl": {
    "h": 247.883,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.40058,
    "c": 0.20204,
    "h": 278
  },
  "luminance": 0.05455
}

Semantic roles & 50–950 ramp

primary

#3927B0

secondary

#BBC76C

accent

#E741D1

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0613

muted

#7D7A82

Preview Lab

Preview with #3927B0

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

Preview Lab → · Contrast checker → · Palette generator →