#3947AB#3947AB

#3947AB is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.7% C 0.160 H 272.2°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#3947AB
RGB	rgb(57, 71, 171)
HSL	hsl(233, 50%, 45%)
HSV	hsv(233, 67%, 67%)
CMYK	cmyk(66.7%, 58.5%, 0%, 32.9%)
CIE-LAB	lab(34.63, 27.54, -55.38)
CIE-LCH	lch(34.63, 61.85, 296.44°)
OKLab	oklab(44.72% 0.0062 -0.1594)
OKLCH	oklch(44.72% 0.16 272.2)
XYZ	xyz(11.2888, 8.3156, 39.5303)
Luminance	0.0832 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3947AB #AB9D39

analogous

#3980AB #3947AB #6439AB

triadic

#3947AB #AB3947 #47AB39

tetradic

#3947AB #AB3980 #AB9D39 #39AB64

square

#3947AB #AB3980 #AB9D39 #39AB64

split-complementary

#3947AB #AB6439 #80AB39

monochromatic

#1A214F #2A347D #3947AB #5967C8 #8791D7

Accessibility & contrast

On white

7.88

#3947AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#3947AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3947AB

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3947AB	#FFFFFF	#000000	##FFFFFF
##3947AB	1.00	7.88	2.66	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057AE

Deuteranopia (green-blind)

#004CA9

Tritanopia (blue-blind)

#005F72

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3947ab;
/* rgb */ color: rgb(57, 71, 171);
/* oklch */ color: oklch(44.7% 0.160 272.2);

Tailwind

colors: {
  custom: {
    50: '#7d7ac5',
    500: '#3947ab',
    950: '#000000',
  },
}

SCSS

$custom: #3947ab;
$custom-light: #7d7ac5;
$custom-dark: #000000;

JSON

{
  "hex": "#3947ab",
  "rgb": {
    "r": 57,
    "g": 71,
    "b": 171
  },
  "hsl": {
    "h": 232.632,
    "s": 50,
    "l": 44.706
  },
  "oklch": {
    "l": 0.44723,
    "c": 0.15955,
    "h": 272.2
  },
  "luminance": 0.08317
}

Semantic roles & 50–950 ramp

primary

#3947AB

secondary

#C1B97F

accent

#C84EDA

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3947AB

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

Preview Lab → · Contrast checker → · Palette generator →