#3733C4#3733C4

#3733C4 is a dark, highly saturated blue. Relative luminance 0.072; OKLCH L 43.6% C 0.215 H 274.0°. Best body text is #FFFFFF at 8.63:1 contrast (WCAG AA passes).

Color values

HEX	#3733C4
RGB	rgb(55, 51, 196)
HSL	hsl(242, 59%, 48%)
HSV	hsv(242, 74%, 77%)
CMYK	cmyk(71.9%, 74%, 0%, 23.1%)
CIE-LAB	lab(32.18, 48.09, -74.19)
CIE-LCH	lch(32.18, 88.41, 302.95°)
OKLab	oklab(43.59% 0.0151 -0.2146)
OKLCH	oklch(43.59% 0.215 274)
XYZ	xyz(12.7199, 7.1641, 52.9263)
Luminance	0.0717 (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

#3733C4 #C0C433

analogous

#3377C4 #3733C4 #7F33C4

triadic

#3733C4 #C43733 #33C437

tetradic

#3733C4 #C43377 #C0C433 #33C47F

square

#3733C4 #C43377 #C0C433 #33C47F

split-complementary

#3733C4 #C47F33 #77C433

monochromatic

#1C1A63 #292693 #3733C4 #625FD5 #928FE2

Accessibility & contrast

On white

8.63

#3733C4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#3733C4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3733C4

8.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3733C4	#FFFFFF	#000000	##FFFFFF
##3733C4	1.00	8.63	2.43	8.63
#FFFFFF	8.63	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052C8

Deuteranopia (green-blind)

#0045C1

Tritanopia (blue-blind)

#005D79

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3733c4;
/* rgb */ color: rgb(55, 51, 196);
/* oklch */ color: oklch(43.6% 0.215 274.0);

Tailwind

colors: {
  custom: {
    50: '#836dd7',
    500: '#3733c4',
    950: '#000000',
  },
}

SCSS

$custom: #3733c4;
$custom-light: #836dd7;
$custom-dark: #000000;

JSON

{
  "hex": "#3733c4",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 196
  },
  "hsl": {
    "h": 241.655,
    "s": 58.704,
    "l": 48.431
  },
  "oklch": {
    "l": 0.43589,
    "c": 0.21512,
    "h": 274
  },
  "luminance": 0.07165
}

Semantic roles & 50–950 ramp

primary

#3733C4

secondary

#CBCD86

accent

#E246DE

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0715

muted

#7D7A83

Preview Lab

Preview with #3733C4

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

Preview Lab → · Contrast checker → · Palette generator →