#3927B3#3927B3

#3927B3 is a dark, highly saturated blue. Relative luminance 0.056; OKLCH L 40.4% C 0.206 H 277.7°. Best body text is #FFFFFF at 9.93:1 contrast (WCAG AA passes).

Color values

HEX	#3927B3
RGB	rgb(57, 39, 179)
HSL	hsl(248, 64%, 43%)
HSV	hsv(248, 78%, 70%)
CMYK	cmyk(68.2%, 78.2%, 0%, 29.8%)
CIE-LAB	lab(28.31, 49.27, -70.51)
CIE-LCH	lch(28.31, 86.02, 304.94°)
OKLab	oklab(40.38% 0.0275 -0.2037)
OKLCH	oklch(40.38% 0.206 277.7)
XYZ	xyz(10.5469, 5.5746, 43.1593)
Luminance	0.0558 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3927B3 #A1B327

analogous

#275BB3 #3927B3 #7F27B3

triadic

#3927B3 #B33927 #27B339

tetradic

#3927B3 #B3275B #A1B327 #27B37F

square

#3927B3 #B3275B #A1B327 #27B37F

split-complementary

#3927B3 #B37F27 #5BB327

monochromatic

#19114E #291C81 #3927B3 #5541D6 #8274E1

Accessibility & contrast

On white

9.93

#3927B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#3927B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3927B3

9.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3927B3	#FFFFFF	#000000	##FFFFFF
##3927B3	1.00	9.93	2.12	9.93
#FFFFFF	9.93	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048B7

Deuteranopia (green-blind)

#003DB1

Tritanopia (blue-blind)

#00516C

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3927b3;
/* rgb */ color: rgb(57, 39, 179);
/* oklch */ color: oklch(40.4% 0.206 277.7);

Tailwind

colors: {
  custom: {
    50: '#8165cb',
    500: '#3927b3',
    950: '#000000',
  },
}

SCSS

$custom: #3927b3;
$custom-light: #8165cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3927b3",
  "rgb": {
    "r": 57,
    "g": 39,
    "b": 179
  },
  "hsl": {
    "h": 247.714,
    "s": 64.22,
    "l": 42.745
  },
  "oklch": {
    "l": 0.40377,
    "c": 0.20557,
    "h": 277.7
  },
  "luminance": 0.05576
}

Semantic roles & 50–950 ramp

primary

#3927B3

secondary

#BCC86E

accent

#E741D2

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0613

muted

#7D7A82

Preview Lab

Preview with #3927B3

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

Preview Lab → · Contrast checker → · Palette generator →