#3637C1#3637C1

#3637C1 is a dark, highly saturated blue. Relative luminance 0.074; OKLCH L 43.8% C 0.208 H 273.4°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#3637C1
RGB	rgb(54, 55, 193)
HSL	hsl(240, 56%, 48%)
HSV	hsv(240, 72%, 76%)
CMYK	cmyk(72%, 71.5%, 0%, 24.3%)
CIE-LAB	lab(32.63, 44.74, -71.69)
CIE-LCH	lch(32.63, 84.51, 301.97°)
OKLab	oklab(43.8% 0.0124 -0.2074)
OKLCH	oklch(43.8% 0.208 273.4)
XYZ	xyz(12.5099, 7.3657, 51.2042)
Luminance	0.0737 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 3.74

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3637C1 #C1C036

analogous

#367CC1 #3637C1 #7A36C1

triadic

#3637C1 #C13637 #37C136

tetradic

#3637C1 #C1367C #C1C036 #36C17A

square

#3637C1 #C1367C #C1C036 #36C17A

split-complementary

#3637C1 #C17A36 #7CC136

monochromatic

#1B1C61 #292991 #3637C1 #6162D3 #9192E0

Accessibility & contrast

On white

8.49

#3637C1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3637C1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3637C1

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3637C1	#FFFFFF	#000000	##FFFFFF
##3637C1	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053C5

Deuteranopia (green-blind)

#0046BE

Tritanopia (blue-blind)

#005E78

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3637c1;
/* rgb */ color: rgb(54, 55, 193);
/* oklch */ color: oklch(43.8% 0.208 273.4);

Tailwind

colors: {
  custom: {
    50: '#826fd5',
    500: '#3637c1',
    950: '#000000',
  },
}

SCSS

$custom: #3637c1;
$custom-light: #826fd5;
$custom-dark: #000000;

JSON

{
  "hex": "#3637c1",
  "rgb": {
    "r": 54,
    "g": 55,
    "b": 193
  },
  "hsl": {
    "h": 239.568,
    "s": 56.275,
    "l": 48.431
  },
  "oklch": {
    "l": 0.43802,
    "c": 0.20773,
    "h": 273.4
  },
  "luminance": 0.07367
}

Semantic roles & 50–950 ramp

primary

#3637C1

secondary

#CBCB88

accent

#DE48E0

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3637C1

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

Preview Lab → · Contrast checker → · Palette generator →