#3637BE#3637BE

#3637BE is a dark, highly saturated blue. Relative luminance 0.072; OKLCH L 43.5% C 0.204 H 273.6°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#3637BE
RGB	rgb(54, 55, 190)
HSL	hsl(240, 56%, 48%)
HSV	hsv(240, 72%, 75%)
CMYK	cmyk(71.6%, 71.1%, 0%, 25.5%)
CIE-LAB	lab(32.33, 43.74, -70.41)
CIE-LCH	lch(32.33, 82.89, 301.85°)
OKLab	oklab(43.5% 0.0129 -0.2036)
OKLCH	oklch(43.5% 0.204 273.6)
XYZ	xyz(12.1787, 7.2332, 49.4595)
Luminance	0.0723 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3637BE #BEBD36

analogous

#367BBE #3637BE #7936BE

triadic

#3637BE #BE3637 #37BE36

tetradic

#3637BE #BE367B #BEBD36 #36BE79

square

#3637BE #BE367B #BEBD36 #36BE79

split-complementary

#3637BE #BE7936 #7BBE36

monochromatic

#1B1B5F #28298E #3637BE #6060D2 #8F90DF

Accessibility & contrast

On white

8.58

#3637BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#3637BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3637BE

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3637BE	#FFFFFF	#000000	##FFFFFF
##3637BE	1.00	8.58	2.45	8.58
#FFFFFF	8.58	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052C2

Deuteranopia (green-blind)

#0046BC

Tritanopia (blue-blind)

#005D77

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3637be;
/* rgb */ color: rgb(54, 55, 190);
/* oklch */ color: oklch(43.5% 0.204 273.6);

Tailwind

colors: {
  custom: {
    50: '#816fd3',
    500: '#3637be',
    950: '#000000',
  },
}

SCSS

$custom: #3637be;
$custom-light: #816fd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3637be",
  "rgb": {
    "r": 54,
    "g": 55,
    "b": 190
  },
  "hsl": {
    "h": 239.559,
    "s": 55.738,
    "l": 47.843
  },
  "oklch": {
    "l": 0.43504,
    "c": 0.20403,
    "h": 273.6
  },
  "luminance": 0.07234
}

Semantic roles & 50–950 ramp

primary

#3637BE

secondary

#CAC986

accent

#DE49DF

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3637BE

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

Preview Lab → · Contrast checker → · Palette generator →