#3837D0#3837D0

#3837D0 is a mid, highly saturated blue. Relative luminance 0.081; OKLCH L 45.4% C 0.225 H 273.1°. Best body text is #FFFFFF at 8.00:1 contrast (WCAG AA passes).

Color values

HEX	#3837D0
RGB	rgb(56, 55, 208)
HSL	hsl(240, 62%, 52%)
HSV	hsv(240, 74%, 82%)
CMYK	cmyk(73.1%, 73.6%, 0%, 18.4%)
CIE-LAB	lab(34.24, 49.85, -77.77)
CIE-LCH	lch(34.24, 92.38, 302.66°)
OKLab	oklab(45.43% 0.0122 -0.225)
OKLCH	oklch(45.43% 0.225 273.1)
XYZ	xyz(14.3784, 8.1257, 60.4729)
Luminance	0.0813 (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

#3837D0 #CFD037

analogous

#3783D0 #3837D0 #8537D0

triadic

#3837D0 #D03837 #37D038

tetradic

#3837D0 #D03783 #CFD037 #37D085

square

#3837D0 #D03783 #CFD037 #37D085

split-complementary

#3837D0 #D08537 #83D037

monochromatic

#1B1B72 #2726A3 #3837D0 #6969DC #9B9AE7

Accessibility & contrast

On white

8.00

#3837D0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#3837D0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3837D0

8.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3837D0	#FFFFFF	#000000	##FFFFFF
##3837D0	1.00	8.00	2.63	8.00
#FFFFFF	8.00	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	8.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058D4

Deuteranopia (green-blind)

#0049CD

Tritanopia (blue-blind)

#006381

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3837d0;
/* rgb */ color: rgb(56, 55, 208);
/* oklch */ color: oklch(45.4% 0.225 273.1);

Tailwind

colors: {
  custom: {
    50: '#8670e0',
    500: '#3837d0',
    950: '#000000',
  },
}

SCSS

$custom: #3837d0;
$custom-light: #8670e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3837d0",
  "rgb": {
    "r": 56,
    "g": 55,
    "b": 208
  },
  "hsl": {
    "h": 240.392,
    "s": 61.943,
    "l": 51.569
  },
  "oklch": {
    "l": 0.45435,
    "c": 0.22536,
    "h": 273.1
  },
  "luminance": 0.08127
}

Semantic roles & 50–950 ramp

primary

#3837D0

secondary

#D3D390

accent

#E543E4

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3837D0

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

Preview Lab → · Contrast checker → · Palette generator →