#3733CA#3733CA

#3733CA is a dark, highly saturated blue. Relative luminance 0.074; OKLCH L 44.2% C 0.222 H 273.6°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#3733CA
RGB	rgb(55, 51, 202)
HSL	hsl(242, 60%, 50%)
HSV	hsv(242, 75%, 79%)
CMYK	cmyk(72.8%, 74.8%, 0%, 20.8%)
CIE-LAB	lab(32.79, 50.02, -76.68)
CIE-LCH	lch(32.79, 91.55, 303.12°)
OKLab	oklab(44.21% 0.014 -0.2218)
OKLCH	oklch(44.21% 0.222 273.6)
XYZ	xyz(13.4165, 7.4428, 56.5952)
Luminance	0.0744 (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

#3733CA #C6CA33

analogous

#337BCA #3733CA #8233CA

triadic

#3733CA #CA3733 #33CA37

tetradic

#3733CA #CA337B #C6CA33 #33CA82

square

#3733CA #CA337B #C6CA33 #33CA82

split-complementary

#3733CA #CA8233 #7BCA33

monochromatic

#1C1A68 #2A2799 #3733CA #6663D8 #9694E4

Accessibility & contrast

On white

8.44

#3733CA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#3733CA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3733CA

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3733CA	#FFFFFF	#000000	##FFFFFF
##3733CA	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054CE

Deuteranopia (green-blind)

#0046C7

Tritanopia (blue-blind)

#005F7C

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3733ca;
/* rgb */ color: rgb(55, 51, 202);
/* oklch */ color: oklch(44.2% 0.222 273.6);

Tailwind

colors: {
  custom: {
    50: '#846ddc',
    500: '#3733ca',
    950: '#000000',
  },
}

SCSS

$custom: #3733ca;
$custom-light: #846ddc;
$custom-dark: #000000;

JSON

{
  "hex": "#3733ca",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 202
  },
  "hsl": {
    "h": 241.589,
    "s": 59.684,
    "l": 49.608
  },
  "oklch": {
    "l": 0.44209,
    "c": 0.22228,
    "h": 273.6
  },
  "luminance": 0.07444
}

Semantic roles & 50–950 ramp

primary

#3733CA

secondary

#CDCF8A

accent

#E345DF

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3733CA

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

Preview Lab → · Contrast checker → · Palette generator →