#3942B9#3942B9

#3942B9 is a mid, vivid blue. Relative luminance 0.083; OKLCH L 45.0% C 0.185 H 273.0°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#3942B9
RGB	rgb(57, 66, 185)
HSL	hsl(236, 53%, 47%)
HSV	hsv(236, 69%, 73%)
CMYK	cmyk(69.2%, 64.3%, 0%, 27.5%)
CIE-LAB	lab(34.53, 35.70, -63.84)
CIE-LCH	lch(34.53, 73.14, 299.21°)
OKLab	oklab(45.01% 0.0098 -0.1843)
OKLCH	oklch(45.01% 0.185 273)
XYZ	xyz(12.3896, 8.2679, 46.8325)
Luminance	0.0827 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3942B9 #B9B039

analogous

#3982B9 #3942B9 #7039B9

triadic

#3942B9 #B93942 #42B939

tetradic

#3942B9 #B93982 #B9B039 #39B970

square

#3942B9 #B93982 #B9B039 #39B970

split-complementary

#3942B9 #B97039 #82B939

monochromatic

#1C215B #2B318A #3942B9 #6169CE #9095DD

Accessibility & contrast

On white

7.91

#3942B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#3942B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3942B9

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3942B9	#FFFFFF	#000000	##FFFFFF
##3942B9	1.00	7.91	2.65	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BD

Deuteranopia (green-blind)

#004BB7

Tritanopia (blue-blind)

#006177

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3942b9;
/* rgb */ color: rgb(57, 66, 185);
/* oklch */ color: oklch(45.0% 0.185 273.0);

Tailwind

colors: {
  custom: {
    50: '#8076cf',
    500: '#3942b9',
    950: '#000000',
  },
}

SCSS

$custom: #3942b9;
$custom-light: #8076cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3942b9",
  "rgb": {
    "r": 57,
    "g": 66,
    "b": 185
  },
  "hsl": {
    "h": 235.781,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.45008,
    "c": 0.18457,
    "h": 273
  },
  "luminance": 0.08269
}

Semantic roles & 50–950 ramp

primary

#3942B9

secondary

#C8C386

accent

#D24BDC

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3942B9

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

Preview Lab → · Contrast checker → · Palette generator →