#3647AC#3647AC

#3647AC is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.6% C 0.162 H 271.0°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#3647AC
RGB	rgb(54, 71, 172)
HSL	hsl(231, 52%, 44%)
HSV	hsv(231, 69%, 67%)
CMYK	cmyk(68.6%, 58.7%, 0%, 32.5%)
CIE-LAB	lab(34.54, 27.44, -56.14)
CIE-LCH	lch(34.54, 62.49, 296.05°)
OKLab	oklab(44.63% 0.003 -0.1617)
OKLCH	oklch(44.63% 0.162 271)
XYZ	xyz(11.2184, 8.2682, 40.0264)
Luminance	0.0827 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3647AC #AC9B36

analogous

#3682AC #3647AC #6036AC

triadic

#3647AC #AC3647 #47AC36

tetradic

#3647AC #AC3682 #AC9B36 #36AC60

square

#3647AC #AC3682 #AC9B36 #36AC60

split-complementary

#3647AC #AC6036 #82AC36

monochromatic

#19214F #27347D #3647AC #5566CA #8490D8

Accessibility & contrast

On white

7.91

#3647AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#3647AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3647AC

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3647AC	#FFFFFF	#000000	##FFFFFF
##3647AC	1.00	7.91	2.65	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057AF

Deuteranopia (green-blind)

#004CAA

Tritanopia (blue-blind)

#006072

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3647ac;
/* rgb */ color: rgb(54, 71, 172);
/* oklch */ color: oklch(44.6% 0.162 271.0);

Tailwind

colors: {
  custom: {
    50: '#7c7ac5',
    500: '#3647ac',
    950: '#000000',
  },
}

SCSS

$custom: #3647ac;
$custom-light: #7c7ac5;
$custom-dark: #000000;

JSON

{
  "hex": "#3647ac",
  "rgb": {
    "r": 54,
    "g": 71,
    "b": 172
  },
  "hsl": {
    "h": 231.356,
    "s": 52.212,
    "l": 44.314
  },
  "oklch": {
    "l": 0.4463,
    "c": 0.16177,
    "h": 271
  },
  "luminance": 0.08269
}

Semantic roles & 50–950 ramp

primary

#3647AC

secondary

#C2B87C

accent

#C74CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3647AC

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

Preview Lab → · Contrast checker → · Palette generator →