#3733C0#3733C0

#3733C0 is a dark, highly saturated blue. Relative luminance 0.070; OKLCH L 43.2% C 0.210 H 274.3°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#3733C0
RGB	rgb(55, 51, 192)
HSL	hsl(242, 58%, 48%)
HSV	hsv(242, 73%, 75%)
CMYK	cmyk(71.4%, 73.4%, 0%, 24.7%)
CIE-LAB	lab(31.77, 46.79, -72.51)
CIE-LCH	lch(31.77, 86.30, 302.83°)
OKLab	oklab(43.18% 0.0159 -0.2097)
OKLCH	oklch(43.18% 0.21 274.3)
XYZ	xyz(12.2706, 6.9845, 50.5604)
Luminance	0.0699 (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

#3733C0 #BCC033

analogous

#3376C0 #3733C0 #7D33C0

triadic

#3733C0 #C03733 #33C037

tetradic

#3733C0 #C03376 #BCC033 #33C07D

square

#3733C0 #C03376 #BCC033 #33C07D

split-complementary

#3733C0 #C07D33 #76C033

monochromatic

#1B195F #292690 #3733C0 #605CD4 #8F8DE1

Accessibility & contrast

On white

8.76

#3733C0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#3733C0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3733C0

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3733C0	#FFFFFF	#000000	##FFFFFF
##3733C0	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051C4

Deuteranopia (green-blind)

#0044BD

Tritanopia (blue-blind)

#005B77

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3733c0;
/* rgb */ color: rgb(55, 51, 192);
/* oklch */ color: oklch(43.2% 0.210 274.3);

Tailwind

colors: {
  custom: {
    50: '#826dd4',
    500: '#3733c0',
    950: '#000000',
  },
}

SCSS

$custom: #3733c0;
$custom-light: #826dd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3733c0",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 192
  },
  "hsl": {
    "h": 241.702,
    "s": 58.025,
    "l": 47.647
  },
  "oklch": {
    "l": 0.4318,
    "c": 0.2103,
    "h": 274.3
  },
  "luminance": 0.06986
}

Semantic roles & 50–950 ramp

primary

#3733C0

secondary

#C9CB84

accent

#E147DD

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3733C0

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

Preview Lab → · Contrast checker → · Palette generator →