#3947A1#3947A1

#3947A1 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 43.9% C 0.146 H 272.3°. Best body text is #FFFFFF at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#3947A1
RGB	rgb(57, 71, 161)
HSL	hsl(232, 48%, 43%)
HSV	hsv(232, 65%, 63%)
CMYK	cmyk(64.6%, 55.9%, 0%, 36.9%)
CIE-LAB	lab(33.88, 23.95, -50.62)
CIE-LCH	lch(33.88, 56.00, 295.32°)
OKLab	oklab(43.92% 0.0059 -0.1454)
OKLCH	oklch(43.92% 0.146 272.3)
XYZ	xyz(10.3715, 7.9486, 34.6990)
Luminance	0.0795 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3947A1 #A19339

analogous

#397BA1 #3947A1 #5F39A1

triadic

#3947A1 #A13947 #47A139

tetradic

#3947A1 #A1397B #A19339 #39A15F

square

#3947A1 #A1397B #A19339 #39A15F

split-complementary

#3947A1 #A15F39 #7BA139

monochromatic

#191F47 #293374 #3947A1 #5563C3 #828DD3

Accessibility & contrast

On white

8.11

#3947A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#3947A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3947A1

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3947A1	#FFFFFF	#000000	##FFFFFF
##3947A1	1.00	8.11	2.59	8.11
#FFFFFF	8.11	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054A4

Deuteranopia (green-blind)

#004B9F

Tritanopia (blue-blind)

#005C6D

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3947a1;
/* rgb */ color: rgb(57, 71, 161);
/* oklch */ color: oklch(43.9% 0.146 272.3);

Tailwind

colors: {
  custom: {
    50: '#7b7abd',
    500: '#3947a1',
    950: '#000000',
  },
}

SCSS

$custom: #3947a1;
$custom-light: #7b7abd;
$custom-dark: #000000;

JSON

{
  "hex": "#3947a1",
  "rgb": {
    "r": 57,
    "g": 71,
    "b": 161
  },
  "hsl": {
    "h": 231.923,
    "s": 47.706,
    "l": 42.745
  },
  "oklch": {
    "l": 0.4392,
    "c": 0.14554,
    "h": 272.3
  },
  "luminance": 0.0795
}

Semantic roles & 50–950 ramp

primary

#3947A1

secondary

#BCB379

accent

#C550D7

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #3947A1

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

Preview Lab → · Contrast checker → · Palette generator →