#3947AC#3947AC

#3947AC is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.8% C 0.161 H 272.2°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#3947AC
RGB	rgb(57, 71, 172)
HSL	hsl(233, 50%, 45%)
HSV	hsv(233, 67%, 67%)
CMYK	cmyk(66.9%, 58.7%, 0%, 32.5%)
CIE-LAB	lab(34.71, 27.89, -55.85)
CIE-LCH	lch(34.71, 62.43, 296.54°)
OKLab	oklab(44.81% 0.0062 -0.1608)
OKLCH	oklch(44.81% 0.161 272.2)
XYZ	xyz(11.3845, 8.3539, 40.0342)
Luminance	0.0835 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3947AC #AC9E39

analogous

#3980AC #3947AC #6539AC

triadic

#3947AC #AC3947 #47AC39

tetradic

#3947AC #AC3980 #AC9E39 #39AC65

square

#3947AC #AC3980 #AC9E39 #39AC65

split-complementary

#3947AC #AC6539 #80AC39

monochromatic

#1B2150 #2A347E #3947AC #5A67C8 #8892D8

Accessibility & contrast

On white

7.86

#3947AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#3947AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3947AC

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3947AC	#FFFFFF	#000000	##FFFFFF
##3947AC	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057AF

Deuteranopia (green-blind)

#004DAA

Tritanopia (blue-blind)

#006072

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3947ac;
/* rgb */ color: rgb(57, 71, 172);
/* oklch */ color: oklch(44.8% 0.161 272.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3947ac",
  "rgb": {
    "r": 57,
    "g": 71,
    "b": 172
  },
  "hsl": {
    "h": 232.696,
    "s": 50.218,
    "l": 44.902
  },
  "oklch": {
    "l": 0.44806,
    "c": 0.16093,
    "h": 272.2
  },
  "luminance": 0.08355
}

Semantic roles & 50–950 ramp

primary

#3947AC

secondary

#C2BA7F

accent

#C94EDA

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3947AC

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

Preview Lab → · Contrast checker → · Palette generator →