#3F33C0#3F33C0

#3F33C0 is a dark, highly saturated blue. Relative luminance 0.072; OKLCH L 43.7% C 0.208 H 277.2°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#3F33C0
RGB	rgb(63, 51, 192)
HSL	hsl(245, 58%, 48%)
HSV	hsv(245, 73%, 75%)
CMYK	cmyk(67.2%, 73.4%, 0%, 24.7%)
CIE-LAB	lab(32.32, 47.63, -71.58)
CIE-LCH	lch(32.32, 85.98, 303.64°)
OKLab	oklab(43.71% 0.026 -0.2068)
OKLCH	oklch(43.71% 0.208 277.2)
XYZ	xyz(12.7451, 7.2291, 50.5827)
Luminance	0.0723 (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

#3F33C0 #B4C033

analogous

#336EC0 #3F33C0 #8533C0

triadic

#3F33C0 #C03F33 #33C03F

tetradic

#3F33C0 #C0336E #B4C033 #33C085

square

#3F33C0 #C0336E #B4C033 #33C085

split-complementary

#3F33C0 #C08533 #6EC033

monochromatic

#1F195F #2F2690 #3F33C0 #675CD4 #948DE1

Accessibility & contrast

On white

8.59

#3F33C0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#3F33C0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F33C0

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F33C0	#FFFFFF	#000000	##FFFFFF
##3F33C0	1.00	8.59	2.45	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052C4

Deuteranopia (green-blind)

#0046BD

Tritanopia (blue-blind)

#005B77

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3f33c0;
/* rgb */ color: rgb(63, 51, 192);
/* oklch */ color: oklch(43.7% 0.208 277.2);

Tailwind

colors: {
  custom: {
    50: '#856dd4',
    500: '#3f33c0',
    950: '#000000',
  },
}

SCSS

$custom: #3f33c0;
$custom-light: #856dd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f33c0",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 192
  },
  "hsl": {
    "h": 245.106,
    "s": 58.025,
    "l": 47.647
  },
  "oklch": {
    "l": 0.43714,
    "c": 0.20842,
    "h": 277.2
  },
  "luminance": 0.0723
}

Semantic roles & 50–950 ramp

primary

#3F33C0

secondary

#C5CB84

accent

#E147D4

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0D0714

muted

#7D7A83

Preview Lab

Preview with #3F33C0

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

Preview Lab → · Contrast checker → · Palette generator →