#3949BB#3949BB

#3949BB is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.4% C 0.179 H 271.4°. Best body text is #FFFFFF at 7.38:1 contrast (WCAG AA passes).

Color values

HEX	#3949BB
RGB	rgb(57, 73, 187)
HSL	hsl(233, 53%, 48%)
HSV	hsv(233, 70%, 73%)
CMYK	cmyk(69.5%, 61%, 0%, 26.7%)
CIE-LAB	lab(36.41, 31.96, -61.96)
CIE-LCH	lch(36.41, 69.72, 297.29°)
OKLab	oklab(46.44% 0.0044 -0.1787)
OKLCH	oklch(46.44% 0.179 271.4)
XYZ	xyz(13.0365, 9.2215, 48.0970)
Luminance	0.0922 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3949BB #BBAB39

analogous

#398ABB #3949BB #6A39BB

triadic

#3949BB #BB3949 #49BB39

tetradic

#3949BB #BB398A #BBAB39 #39BB6A

square

#3949BB #BB398A #BBAB39 #39BB6A

split-complementary

#3949BB #BB6A39 #8ABB39

monochromatic

#1C245D #2B378C #3949BB #626FCF #919ADD

Accessibility & contrast

On white

7.38

#3949BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#3949BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3949BB

7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3949BB	#FFFFFF	#000000	##FFFFFF
##3949BB	1.00	7.38	2.84	7.38
#FFFFFF	7.38	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CBF

Deuteranopia (green-blind)

#0050B9

Tritanopia (blue-blind)

#00667B

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3949bb;
/* rgb */ color: rgb(57, 73, 187);
/* oklch */ color: oklch(46.4% 0.179 271.4);

Tailwind

colors: {
  custom: {
    50: '#807bd0',
    500: '#3949bb',
    950: '#000000',
  },
}

SCSS

$custom: #3949bb;
$custom-light: #807bd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3949bb",
  "rgb": {
    "r": 57,
    "g": 73,
    "b": 187
  },
  "hsl": {
    "h": 232.615,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.46438,
    "c": 0.1788,
    "h": 271.4
  },
  "luminance": 0.09223
}

Semantic roles & 50–950 ramp

primary

#3949BB

secondary

#C8C087

accent

#CB4BDD

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #3949BB

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

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