#3933CB#3933CB

#3933CB is a dark, highly saturated blue. Relative luminance 0.075; OKLCH L 44.4% C 0.223 H 274.2°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#3933CB
RGB	rgb(57, 51, 203)
HSL	hsl(242, 60%, 50%)
HSV	hsv(242, 75%, 80%)
CMYK	cmyk(71.9%, 74.9%, 0%, 20.4%)
CIE-LAB	lab(33.02, 50.51, -76.88)
CIE-LCH	lch(33.02, 91.99, 303.31°)
OKLab	oklab(44.44% 0.0162 -0.2224)
OKLCH	oklch(44.44% 0.223 274.2)
XYZ	xyz(13.6471, 7.5480, 57.2260)
Luminance	0.0755 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 3.50

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3933CB #C5CB33

analogous

#3379CB #3933CB #8533CB

triadic

#3933CB #CB3933 #33CB39

tetradic

#3933CB #CB3379 #C5CB33 #33CB85

square

#3933CB #CB3379 #C5CB33 #33CB85

split-complementary

#3933CB #CB8533 #79CB33

monochromatic

#1E1A69 #2B279A #3933CB #6863D8 #9794E4

Accessibility & contrast

On white

8.37

#3933CB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#3933CB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3933CB

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3933CB	#FFFFFF	#000000	##FFFFFF
##3933CB	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055CF

Deuteranopia (green-blind)

#0046C8

Tritanopia (blue-blind)

#00607D

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3933cb;
/* rgb */ color: rgb(57, 51, 203);
/* oklch */ color: oklch(44.4% 0.223 274.2);

Tailwind

colors: {
  custom: {
    50: '#856ddc',
    500: '#3933cb',
    950: '#000000',
  },
}

SCSS

$custom: #3933cb;
$custom-light: #856ddc;
$custom-dark: #000000;

JSON

{
  "hex": "#3933cb",
  "rgb": {
    "r": 57,
    "g": 51,
    "b": 203
  },
  "hsl": {
    "h": 242.368,
    "s": 59.843,
    "l": 49.804
  },
  "oklch": {
    "l": 0.44435,
    "c": 0.22296,
    "h": 274.2
  },
  "luminance": 0.07549
}

Semantic roles & 50–950 ramp

primary

#3933CB

secondary

#CDCF8B

accent

#E345DD

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3933CB

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

Preview Lab → · Contrast checker → · Palette generator →