#3947AA#3947AA

#3947AA is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.6% C 0.158 H 272.2°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#3947AA
RGB	rgb(57, 71, 170)
HSL	hsl(233, 50%, 45%)
HSV	hsv(233, 66%, 67%)
CMYK	cmyk(66.5%, 58.2%, 0%, 33.3%)
CIE-LAB	lab(34.55, 27.18, -54.91)
CIE-LCH	lch(34.55, 61.27, 296.33°)
OKLab	oklab(44.64% 0.0061 -0.158)
OKLCH	oklch(44.64% 0.158 272.2)
XYZ	xyz(11.1938, 8.2776, 39.0302)
Luminance	0.0828 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3947AA #AA9C39

analogous

#3980AA #3947AA #6339AA

triadic

#3947AA #AA3947 #47AA39

tetradic

#3947AA #AA3980 #AA9C39 #39AA63

square

#3947AA #AA3980 #AA9C39 #39AA63

split-complementary

#3947AA #AA6339 #80AA39

monochromatic

#1A214E #2A347C #3947AA #5967C7 #8791D7

Accessibility & contrast

On white

7.91

#3947AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#3947AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3947AA

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3947AA	#FFFFFF	#000000	##FFFFFF
##3947AA	1.00	7.91	2.66	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056AD

Deuteranopia (green-blind)

#004CA8

Tritanopia (blue-blind)

#005F71

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3947aa;
/* rgb */ color: rgb(57, 71, 170);
/* oklch */ color: oklch(44.6% 0.158 272.2);

Tailwind

colors: {
  custom: {
    50: '#7d7ac4',
    500: '#3947aa',
    950: '#000000',
  },
}

SCSS

$custom: #3947aa;
$custom-light: #7d7ac4;
$custom-dark: #000000;

JSON

{
  "hex": "#3947aa",
  "rgb": {
    "r": 57,
    "g": 71,
    "b": 170
  },
  "hsl": {
    "h": 232.566,
    "s": 49.78,
    "l": 44.51
  },
  "oklch": {
    "l": 0.44642,
    "c": 0.15817,
    "h": 272.2
  },
  "luminance": 0.08279
}

Semantic roles & 50–950 ramp

primary

#3947AA

secondary

#C1B87E

accent

#C84ED9

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3947AA

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

Preview Lab → · Contrast checker → · Palette generator →