#3924B4#3924B4

#3924B4 is a dark, highly saturated blue. Relative luminance 0.054; OKLCH L 40.1% C 0.209 H 277.9°. Best body text is #FFFFFF at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#3924B4
RGB	rgb(57, 36, 180)
HSL	hsl(249, 67%, 42%)
HSV	hsv(249, 80%, 71%)
CMYK	cmyk(68.3%, 80%, 0%, 29.4%)
CIE-LAB	lab(27.92, 51.03, -71.77)
CIE-LCH	lch(27.92, 88.06, 305.42°)
OKLab	oklab(40.13% 0.0287 -0.2073)
OKLCH	oklch(40.13% 0.209 277.9)
XYZ	xyz(10.5538, 5.4260, 43.6623)
Luminance	0.0543 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3924B4 #9FB424

analogous

#2457B4 #3924B4 #8124B4

triadic

#3924B4 #B43924 #24B439

tetradic

#3924B4 #B42457 #9FB424 #24B481

square

#3924B4 #B42457 #9FB424 #24B481

split-complementary

#3924B4 #B48124 #57B424

monochromatic

#19104E #291A81 #3924B4 #543DD8 #8170E2

Accessibility & contrast

On white

10.07

#3924B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#3924B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3924B4

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3924B4	#FFFFFF	#000000	##FFFFFF
##3924B4	1.00	10.07	2.09	10.07
#FFFFFF	10.07	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047B8

Deuteranopia (green-blind)

#003CB2

Tritanopia (blue-blind)

#00506C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3924b4;
/* rgb */ color: rgb(57, 36, 180);
/* oklch */ color: oklch(40.1% 0.209 277.9);

Tailwind

colors: {
  custom: {
    50: '#8263cc',
    500: '#3924b4',
    950: '#000000',
  },
}

SCSS

$custom: #3924b4;
$custom-light: #8263cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3924b4",
  "rgb": {
    "r": 57,
    "g": 36,
    "b": 180
  },
  "hsl": {
    "h": 248.75,
    "s": 66.667,
    "l": 42.353
  },
  "oklch": {
    "l": 0.40132,
    "c": 0.20931,
    "h": 277.9
  },
  "luminance": 0.05427
}

Semantic roles & 50–950 ramp

primary

#3924B4

secondary

#BBC96B

accent

#EA3ED1

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #3924B4

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

Preview Lab → · Contrast checker → · Palette generator →