#3928B4#3928B4

#3928B4 is a dark, highly saturated blue. Relative luminance 0.057; OKLCH L 40.6% C 0.206 H 277.5°. Best body text is #FFFFFF at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#3928B4
RGB	rgb(57, 40, 180)
HSL	hsl(247, 64%, 43%)
HSV	hsv(247, 78%, 71%)
CMYK	cmyk(68.3%, 77.8%, 0%, 29.4%)
CIE-LAB	lab(28.59, 49.07, -70.64)
CIE-LCH	lch(28.59, 86.01, 304.78°)
OKLab	oklab(40.61% 0.0267 -0.2041)
OKLCH	oklch(40.61% 0.206 277.5)
XYZ	xyz(10.6817, 5.6818, 43.7049)
Luminance	0.0568 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3928B4 #A3B428

analogous

#285DB4 #3928B4 #7F28B4

triadic

#3928B4 #B43928 #28B439

tetradic

#3928B4 #B4285D #A3B428 #28B47F

square

#3928B4 #B4285D #A3B428 #28B47F

split-complementary

#3928B4 #B47F28 #5DB428

monochromatic

#191250 #291D82 #3928B4 #5544D5 #8376E1

Accessibility & contrast

On white

9.83

#3928B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#3928B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3928B4

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3928B4	#FFFFFF	#000000	##FFFFFF
##3928B4	1.00	9.83	2.14	9.83
#FFFFFF	9.83	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049B8

Deuteranopia (green-blind)

#003DB2

Tritanopia (blue-blind)

#00526D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3928b4;
/* rgb */ color: rgb(57, 40, 180);
/* oklch */ color: oklch(40.6% 0.206 277.5);

Tailwind

colors: {
  custom: {
    50: '#8165cc',
    500: '#3928b4',
    950: '#000000',
  },
}

SCSS

$custom: #3928b4;
$custom-light: #8165cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3928b4",
  "rgb": {
    "r": 57,
    "g": 40,
    "b": 180
  },
  "hsl": {
    "h": 247.286,
    "s": 63.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.40606,
    "c": 0.20586,
    "h": 277.5
  },
  "luminance": 0.05683
}

Semantic roles & 50–950 ramp

primary

#3928B4

secondary

#BDC870

accent

#E741D3

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #3928B4

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

Preview Lab → · Contrast checker → · Palette generator →