#3F33C7#3F33C7

#3F33C7 is a dark, highly saturated blue. Relative luminance 0.075; OKLCH L 44.4% C 0.217 H 276.5°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#3F33C7
RGB	rgb(63, 51, 199)
HSL	hsl(245, 59%, 49%)
HSV	hsv(245, 74%, 78%)
CMYK	cmyk(68.3%, 74.4%, 0%, 22%)
CIE-LAB	lab(33.02, 49.83, -74.54)
CIE-LCH	lch(33.02, 89.66, 303.77°)
OKLab	oklab(44.42% 0.0246 -0.2154)
OKLCH	oklch(44.42% 0.217 276.5)
XYZ	xyz(13.5392, 7.5467, 54.7649)
Luminance	0.0755 (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

#3F33C7 #BBC733

analogous

#3371C7 #3F33C7 #8933C7

triadic

#3F33C7 #C73F33 #33C73F

tetradic

#3F33C7 #C73371 #BBC733 #33C789

square

#3F33C7 #C73371 #BBC733 #33C789

split-complementary

#3F33C7 #C78933 #71C733

monochromatic

#201A66 #302796 #3F33C7 #6A61D6 #9891E3

Accessibility & contrast

On white

8.37

#3F33C7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#3F33C7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F33C7

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F33C7	#FFFFFF	#000000	##FFFFFF
##3F33C7	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)

#0054CB

Deuteranopia (green-blind)

#0047C4

Tritanopia (blue-blind)

#005E7B

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f33c7;
/* rgb */ color: rgb(63, 51, 199);
/* oklch */ color: oklch(44.4% 0.217 276.5);

Tailwind

colors: {
  custom: {
    50: '#876dd9',
    500: '#3f33c7',
    950: '#000000',
  },
}

SCSS

$custom: #3f33c7;
$custom-light: #876dd9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f33c7",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 199
  },
  "hsl": {
    "h": 244.865,
    "s": 59.2,
    "l": 49.02
  },
  "oklch": {
    "l": 0.44417,
    "c": 0.2168,
    "h": 276.5
  },
  "luminance": 0.07548
}

Semantic roles & 50–950 ramp

primary

#3F33C7

secondary

#C8CE88

accent

#E245D6

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3F33C7

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

Preview Lab → · Contrast checker → · Palette generator →