#3637AC#3637AC

#3637AC is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.8% C 0.181 H 274.8°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#3637AC
RGB	rgb(54, 55, 172)
HSL	hsl(239, 52%, 44%)
HSV	hsv(239, 69%, 67%)
CMYK	cmyk(68.6%, 68%, 0%, 32.5%)
CIE-LAB	lab(30.63, 37.64, -62.53)
CIE-LCH	lch(30.63, 72.98, 301.05°)
OKLab	oklab(41.76% 0.0153 -0.1806)
OKLCH	oklch(41.76% 0.181 274.8)
XYZ	xyz(10.3314, 6.4943, 39.7308)
Luminance	0.0649 (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

#3637AC #ACAB36

analogous

#3672AC #3637AC #7036AC

triadic

#3637AC #AC3637 #37AC36

tetradic

#3637AC #AC3672 #ACAB36 #36AC70

square

#3637AC #AC3672 #ACAB36 #36AC70

split-complementary

#3637AC #AC7036 #72AC36

monochromatic

#19194F #27287D #3637AC #5556CA #8485D8

Accessibility & contrast

On white

9.13

#3637AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#3637AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3637AC

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3637AC	#FFFFFF	#000000	##FFFFFF
##3637AC	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB0

Deuteranopia (green-blind)

#0043AA

Tritanopia (blue-blind)

#00566D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3637ac;
/* rgb */ color: rgb(54, 55, 172);
/* oklch */ color: oklch(41.8% 0.181 274.8);

Tailwind

colors: {
  custom: {
    50: '#7d6ec6',
    500: '#3637ac',
    950: '#000000',
  },
}

SCSS

$custom: #3637ac;
$custom-light: #7d6ec6;
$custom-dark: #000000;

JSON

{
  "hex": "#3637ac",
  "rgb": {
    "r": 54,
    "g": 55,
    "b": 172
  },
  "hsl": {
    "h": 239.492,
    "s": 52.212,
    "l": 44.314
  },
  "oklch": {
    "l": 0.41758,
    "c": 0.18124,
    "h": 274.8
  },
  "luminance": 0.06495
}

Semantic roles & 50–950 ramp

primary

#3637AC

secondary

#C2C17C

accent

#DA4CDC

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3637AC

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

Preview Lab → · Contrast checker → · Palette generator →