#3949C9#3949C9

#3949C9 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.7% C 0.197 H 271.1°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).

Color values

HEX	#3949C9
RGB	rgb(57, 73, 201)
HSL	hsl(233, 57%, 51%)
HSV	hsv(233, 72%, 79%)
CMYK	cmyk(71.6%, 63.7%, 0%, 21.2%)
CIE-LAB	lab(37.57, 36.92, -68.23)
CIE-LCH	lch(37.57, 77.58, 298.41°)
OKLab	oklab(47.66% 0.0039 -0.1971)
OKLCH	oklch(47.66% 0.197 271.1)
XYZ	xyz(14.6089, 9.8505, 56.3784)
Luminance	0.0985 (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

#3949C9 #C9B939

analogous

#3991C9 #3949C9 #7139C9

triadic

#3949C9 #C93949 #49C939

tetradic

#3949C9 #C93991 #C9B939 #39C971

square

#3949C9 #C93991 #C9B939 #39C971

split-complementary

#3949C9 #C97139 #91C939

monochromatic

#1D266B #2A379B #3949C9 #6975D6 #99A1E3

Accessibility & contrast

On white

7.07

#3949C9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#3949C9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3949C9

7.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3949C9	#FFFFFF	#000000	##FFFFFF
##3949C9	1.00	7.07	2.97	7.07
#FFFFFF	7.07	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FCD

Deuteranopia (green-blind)

#0052C7

Tritanopia (blue-blind)

#006A82

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3949c9;
/* rgb */ color: rgb(57, 73, 201);
/* oklch */ color: oklch(47.7% 0.197 271.1);

Tailwind

colors: {
  custom: {
    50: '#837cda',
    500: '#3949c9',
    950: '#000000',
  },
}

SCSS

$custom: #3949c9;
$custom-light: #837cda;
$custom-dark: #000000;

JSON

{
  "hex": "#3949c9",
  "rgb": {
    "r": 57,
    "g": 73,
    "b": 201
  },
  "hsl": {
    "h": 233.333,
    "s": 57.143,
    "l": 50.588
  },
  "oklch": {
    "l": 0.47658,
    "c": 0.19718,
    "h": 271.1
  },
  "luminance": 0.09852
}

Semantic roles & 50–950 ramp

primary

#3949C9

secondary

#CFC88F

accent

#CF47E0

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0915

muted

#7D7B83

Preview Lab

Preview with #3949C9

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

Preview Lab → · Contrast checker → · Palette generator →