#3940C9#3940C9

#3940C9 is a mid, highly saturated blue. Relative luminance 0.088; OKLCH L 46.1% C 0.207 H 272.7°. Best body text is #FFFFFF at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#3940C9
RGB	rgb(57, 64, 201)
HSL	hsl(237, 57%, 51%)
HSV	hsv(237, 72%, 79%)
CMYK	cmyk(71.6%, 68.2%, 0%, 21.2%)
CIE-LAB	lab(35.50, 42.44, -71.63)
CIE-LCH	lch(35.50, 83.26, 300.65°)
OKLab	oklab(46.15% 0.0096 -0.2071)
OKLCH	oklch(46.15% 0.207 272.7)
XYZ	xyz(14.0598, 8.7523, 56.1954)
Luminance	0.0875 (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

#3940C9 #C9C239

analogous

#3988C9 #3940C9 #7A39C9

triadic

#3940C9 #C93940 #40C939

tetradic

#3940C9 #C93988 #C9C239 #39C97A

square

#3940C9 #C93988 #C9C239 #39C97A

split-complementary

#3940C9 #C97A39 #88C939

monochromatic

#1D216B #2A309B #3940C9 #696ED6 #999DE3

Accessibility & contrast

On white

7.63

#3940C9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#3940C9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3940C9

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3940C9	#FFFFFF	#000000	##FFFFFF
##3940C9	1.00	7.63	2.75	7.63
#FFFFFF	7.63	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ACD

Deuteranopia (green-blind)

#004DC6

Tritanopia (blue-blind)

#00657F

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3940c9;
/* rgb */ color: rgb(57, 64, 201);
/* oklch */ color: oklch(46.1% 0.207 272.7);

Tailwind

colors: {
  custom: {
    50: '#8475db',
    500: '#3940c9',
    950: '#000000',
  },
}

SCSS

$custom: #3940c9;
$custom-light: #8475db;
$custom-dark: #000000;

JSON

{
  "hex": "#3940c9",
  "rgb": {
    "r": 57,
    "g": 64,
    "b": 201
  },
  "hsl": {
    "h": 237.083,
    "s": 57.143,
    "l": 50.588
  },
  "oklch": {
    "l": 0.46149,
    "c": 0.20733,
    "h": 272.7
  },
  "luminance": 0.08754
}

Semantic roles & 50–950 ramp

primary

#3940C9

secondary

#CFCC8F

accent

#D947E0

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #3940C9

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

Preview Lab → · Contrast checker → · Palette generator →