#3647AA#3647AA

#3647AA is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.5% C 0.159 H 271.1°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#3647AA
RGB	rgb(54, 71, 170)
HSL	hsl(231, 52%, 44%)
HSV	hsv(231, 68%, 67%)
CMYK	cmyk(68.2%, 58.2%, 0%, 33.3%)
CIE-LAB	lab(34.38, 26.71, -55.20)
CIE-LCH	lch(34.38, 61.33, 295.82°)
OKLab	oklab(44.47% 0.0029 -0.159)
OKLCH	oklch(44.47% 0.159 271.1)
XYZ	xyz(11.0278, 8.1920, 39.0225)
Luminance	0.0819 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3647AA #AA9936

analogous

#3681AA #3647AA #5F36AA

triadic

#3647AA #AA3647 #47AA36

tetradic

#3647AA #AA3681 #AA9936 #36AA5F

square

#3647AA #AA3681 #AA9936 #36AA5F

split-complementary

#3647AA #AA5F36 #81AA36

monochromatic

#18204D #27347C #3647AA #5465C9 #838FD8

Accessibility & contrast

On white

7.96

#3647AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#3647AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3647AA

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3647AA	#FFFFFF	#000000	##FFFFFF
##3647AA	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	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: #3647aa;
/* rgb */ color: rgb(54, 71, 170);
/* oklch */ color: oklch(44.5% 0.159 271.1);

Tailwind

colors: {
  custom: {
    50: '#7b7ac4',
    500: '#3647aa',
    950: '#000000',
  },
}

SCSS

$custom: #3647aa;
$custom-light: #7b7ac4;
$custom-dark: #000000;

JSON

{
  "hex": "#3647aa",
  "rgb": {
    "r": 54,
    "g": 71,
    "b": 170
  },
  "hsl": {
    "h": 231.207,
    "s": 51.786,
    "l": 43.922
  },
  "oklch": {
    "l": 0.44465,
    "c": 0.15901,
    "h": 271.1
  },
  "luminance": 0.08193
}

Semantic roles & 50–950 ramp

primary

#3647AA

secondary

#C1B77B

accent

#C64DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3647AA

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

Preview Lab → · Contrast checker → · Palette generator →