#3837CD#3837CD

#3837CD is a mid, highly saturated blue. Relative luminance 0.080; OKLCH L 45.1% C 0.222 H 273.3°. Best body text is #FFFFFF at 8.09:1 contrast (WCAG AA passes).

Color values

HEX	#3837CD
RGB	rgb(56, 55, 205)
HSL	hsl(240, 60%, 51%)
HSV	hsv(240, 73%, 80%)
CMYK	cmyk(72.7%, 73.2%, 0%, 19.6%)
CIE-LAB	lab(33.94, 48.88, -76.53)
CIE-LCH	lch(33.94, 90.81, 302.57°)
OKLab	oklab(45.13% 0.0127 -0.2214)
OKLCH	oklch(45.13% 0.222 273.3)
XYZ	xyz(14.0128, 7.9795, 58.5475)
Luminance	0.0798 (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

#3837CD #CCCD37

analogous

#3781CD #3837CD #8337CD

triadic

#3837CD #CD3837 #37CD38

tetradic

#3837CD #CD3781 #CCCD37 #37CD83

square

#3837CD #CD3781 #CCCD37 #37CD83

split-complementary

#3837CD #CD8337 #81CD37

monochromatic

#1C1C6E #29289F #3837CD #6968D9 #9999E5

Accessibility & contrast

On white

8.09

#3837CD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#3837CD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3837CD

8.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3837CD	#FFFFFF	#000000	##FFFFFF
##3837CD	1.00	8.09	2.60	8.09
#FFFFFF	8.09	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057D1

Deuteranopia (green-blind)

#0049CA

Tritanopia (blue-blind)

#00627F

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3837cd;
/* rgb */ color: rgb(56, 55, 205);
/* oklch */ color: oklch(45.1% 0.222 273.3);

Tailwind

colors: {
  custom: {
    50: '#8570de',
    500: '#3837cd',
    950: '#000000',
  },
}

SCSS

$custom: #3837cd;
$custom-light: #8570de;
$custom-dark: #000000;

JSON

{
  "hex": "#3837cd",
  "rgb": {
    "r": 56,
    "g": 55,
    "b": 205
  },
  "hsl": {
    "h": 240.4,
    "s": 60,
    "l": 50.98
  },
  "oklch": {
    "l": 0.45129,
    "c": 0.22178,
    "h": 273.3
  },
  "luminance": 0.07981
}

Semantic roles & 50–950 ramp

primary

#3837CD

secondary

#D1D18F

accent

#E345E2

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3837CD

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

Preview Lab → · Contrast checker → · Palette generator →