#3733CD#3733CD

#3733CD is a dark, highly saturated blue. Relative luminance 0.076; OKLCH L 44.5% C 0.226 H 273.4°. Best body text is #FFFFFF at 8.34:1 contrast (WCAG AA passes).

Color values

HEX	#3733CD
RGB	rgb(55, 51, 205)
HSL	hsl(242, 61%, 50%)
HSV	hsv(242, 75%, 80%)
CMYK	cmyk(73.2%, 75.1%, 0%, 19.6%)
CIE-LAB	lab(33.11, 50.97, -77.91)
CIE-LCH	lch(33.11, 93.10, 303.20°)
OKLab	oklab(44.52% 0.0134 -0.2254)
OKLCH	oklch(44.52% 0.226 273.4)
XYZ	xyz(13.7751, 7.5862, 58.4841)
Luminance	0.0759 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 3.60

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3733CD #C9CD33

analogous

#337CCD #3733CD #8433CD

triadic

#3733CD #CD3733 #33CD37

tetradic

#3733CD #CD337C #C9CD33 #33CD84

square

#3733CD #CD337C #C9CD33 #33CD84

split-complementary

#3733CD #CD8433 #7CCD33

monochromatic

#1C1A6B #29269C #3733CD #6764D9 #9795E5

Accessibility & contrast

On white

8.34

#3733CD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#3733CD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3733CD

8.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3733CD	#FFFFFF	#000000	##FFFFFF
##3733CD	1.00	8.34	2.52	8.34
#FFFFFF	8.34	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055D1

Deuteranopia (green-blind)

#0046CA

Tritanopia (blue-blind)

#00607E

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3733cd;
/* rgb */ color: rgb(55, 51, 205);
/* oklch */ color: oklch(44.5% 0.226 273.4);

Tailwind

colors: {
  custom: {
    50: '#856dde',
    500: '#3733cd',
    950: '#000000',
  },
}

SCSS

$custom: #3733cd;
$custom-light: #856dde;
$custom-dark: #000000;

JSON

{
  "hex": "#3733cd",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 205
  },
  "hsl": {
    "h": 241.558,
    "s": 60.63,
    "l": 50.196
  },
  "oklch": {
    "l": 0.44522,
    "c": 0.22582,
    "h": 273.4
  },
  "luminance": 0.07588
}

Semantic roles & 50–950 ramp

primary

#3733CD

secondary

#CFD08B

accent

#E444E0

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3733CD

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

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