#3928B0#3928B0

#3928B0 is a dark, highly saturated blue. Relative luminance 0.055; OKLCH L 40.2% C 0.201 H 277.9°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#3928B0
RGB	rgb(57, 40, 176)
HSL	hsl(248, 63%, 42%)
HSV	hsv(248, 77%, 69%)
CMYK	cmyk(67.6%, 77.3%, 0%, 31%)
CIE-LAB	lab(28.17, 47.84, -68.96)
CIE-LCH	lch(28.17, 83.92, 304.75°)
OKLab	oklab(40.18% 0.0277 -0.1992)
OKLCH	oklch(40.18% 0.201 277.9)
XYZ	xyz(10.2801, 5.5211, 41.5898)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3928B0 #9FB028

analogous

#285BB0 #3928B0 #7D28B0

triadic

#3928B0 #B03928 #28B039

tetradic

#3928B0 #B0285B #9FB028 #28B07D

square

#3928B0 #B0285B #9FB028 #28B07D

split-complementary

#3928B0 #B07D28 #5BB028

monochromatic

#19114C #291D7E #3928B0 #5441D4 #8173DF

Accessibility & contrast

On white

9.98

#3928B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#3928B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3928B0

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3928B0	#FFFFFF	#000000	##FFFFFF
##3928B0	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048B4

Deuteranopia (green-blind)

#003DAE

Tritanopia (blue-blind)

#00506B

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3928b0;
/* rgb */ color: rgb(57, 40, 176);
/* oklch */ color: oklch(40.2% 0.201 277.9);

Tailwind

colors: {
  custom: {
    50: '#8065c9',
    500: '#3928b0',
    950: '#000000',
  },
}

SCSS

$custom: #3928b0;
$custom-light: #8065c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3928b0",
  "rgb": {
    "r": 57,
    "g": 40,
    "b": 176
  },
  "hsl": {
    "h": 247.5,
    "s": 62.963,
    "l": 42.353
  },
  "oklch": {
    "l": 0.40183,
    "c": 0.20113,
    "h": 277.9
  },
  "luminance": 0.05522
}

Semantic roles & 50–950 ramp

primary

#3928B0

secondary

#BBC66D

accent

#E642D1

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0613

muted

#7D7A82

Preview Lab

Preview with #3928B0

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

Preview Lab → · Contrast checker → · Palette generator →