#3733C8#3733C8

#3733C8 is a dark, highly saturated blue. Relative luminance 0.073; OKLCH L 44.0% C 0.220 H 273.7°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#3733C8
RGB	rgb(55, 51, 200)
HSL	hsl(242, 59%, 49%)
HSV	hsv(242, 75%, 78%)
CMYK	cmyk(72.5%, 74.5%, 0%, 21.6%)
CIE-LAB	lab(32.59, 49.38, -75.85)
CIE-LCH	lch(32.59, 90.51, 303.06°)
OKLab	oklab(44% 0.0144 -0.2194)
OKLCH	oklch(44% 0.22 273.7)
XYZ	xyz(13.1812, 7.3487, 55.3562)
Luminance	0.0735 (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

#3733C8 #C4C833

analogous

#337AC8 #3733C8 #8233C8

triadic

#3733C8 #C83733 #33C837

tetradic

#3733C8 #C8337A #C4C833 #33C882

square

#3733C8 #C8337A #C4C833 #33C882

split-complementary

#3733C8 #C88233 #7AC833

monochromatic

#1C1A66 #2A2797 #3733C8 #6561D7 #9492E3

Accessibility & contrast

On white

8.50

#3733C8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3733C8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3733C8

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3733C8	#FFFFFF	#000000	##FFFFFF
##3733C8	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054CC

Deuteranopia (green-blind)

#0045C5

Tritanopia (blue-blind)

#005E7B

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3733c8;
/* rgb */ color: rgb(55, 51, 200);
/* oklch */ color: oklch(44.0% 0.220 273.7);

Tailwind

colors: {
  custom: {
    50: '#846dda',
    500: '#3733c8',
    950: '#000000',
  },
}

SCSS

$custom: #3733c8;
$custom-light: #846dda;
$custom-dark: #000000;

JSON

{
  "hex": "#3733c8",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 200
  },
  "hsl": {
    "h": 241.611,
    "s": 59.363,
    "l": 49.216
  },
  "oklch": {
    "l": 0.44002,
    "c": 0.2199,
    "h": 273.7
  },
  "luminance": 0.0735
}

Semantic roles & 50–950 ramp

primary

#3733C8

secondary

#CCCE89

accent

#E345DE

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0D0715

muted

#7D7A83

Preview Lab

Preview with #3733C8

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

Preview Lab → · Contrast checker → · Palette generator →