#3733C1#3733C1

#3733C1 is a dark, highly saturated blue. Relative luminance 0.070; OKLCH L 43.3% C 0.212 H 274.3°. Best body text is #FFFFFF at 8.73:1 contrast (WCAG AA passes).

Color values

HEX	#3733C1
RGB	rgb(55, 51, 193)
HSL	hsl(242, 58%, 48%)
HSV	hsv(242, 74%, 76%)
CMYK	cmyk(71.5%, 73.6%, 0%, 24.3%)
CIE-LAB	lab(31.87, 47.12, -72.93)
CIE-LCH	lch(31.87, 86.83, 302.86°)
OKLab	oklab(43.28% 0.0157 -0.2109)
OKLCH	oklch(43.28% 0.212 274.3)
XYZ	xyz(12.3818, 7.0289, 51.1459)
Luminance	0.0703 (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

#3733C1 #BDC133

analogous

#3376C1 #3733C1 #7E33C1

triadic

#3733C1 #C13733 #33C137

tetradic

#3733C1 #C13376 #BDC133 #33C17E

square

#3733C1 #C13376 #BDC133 #33C17E

split-complementary

#3733C1 #C17E33 #76C133

monochromatic

#1B1960 #292691 #3733C1 #605DD4 #908DE1

Accessibility & contrast

On white

8.73

#3733C1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#3733C1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3733C1

8.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3733C1	#FFFFFF	#000000	##FFFFFF
##3733C1	1.00	8.73	2.41	8.73
#FFFFFF	8.73	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051C5

Deuteranopia (green-blind)

#0044BE

Tritanopia (blue-blind)

#005C77

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3733c1;
/* rgb */ color: rgb(55, 51, 193);
/* oklch */ color: oklch(43.3% 0.212 274.3);

Tailwind

colors: {
  custom: {
    50: '#826dd5',
    500: '#3733c1',
    950: '#000000',
  },
}

SCSS

$custom: #3733c1;
$custom-light: #826dd5;
$custom-dark: #000000;

JSON

{
  "hex": "#3733c1",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 193
  },
  "hsl": {
    "h": 241.69,
    "s": 58.197,
    "l": 47.843
  },
  "oklch": {
    "l": 0.43282,
    "c": 0.21151,
    "h": 274.3
  },
  "luminance": 0.0703
}

Semantic roles & 50–950 ramp

primary

#3733C1

secondary

#C9CB84

accent

#E146DD

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3733C1

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

Preview Lab → · Contrast checker → · Palette generator →