#3F17B4#3F17B4

#3F17B4 is a dark, highly saturated violet. Relative luminance 0.050; OKLCH L 39.4% C 0.217 H 281.4°. Best body text is #FFFFFF at 10.54:1 contrast (WCAG AA passes).

Color values

HEX	#3F17B4
RGB	rgb(63, 23, 180)
HSL	hsl(255, 77%, 40%)
HSV	hsv(255, 87%, 71%)
CMYK	cmyk(65%, 87.2%, 0%, 29.4%)
CIE-LAB	lab(26.63, 56.85, -73.88)
CIE-LCH	lch(26.63, 93.22, 307.58°)
OKLab	oklab(39.38% 0.043 -0.2131)
OKLCH	oklch(39.38% 0.217 281.4)
XYZ	xyz(10.5919, 4.9640, 43.5712)
Luminance	0.0496 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F17B4 #8CB417

analogous

#173DB4 #3F17B4 #8E17B4

triadic

#3F17B4 #B43F17 #17B43F

tetradic

#3F17B4 #B4173D #8CB417 #17B48E

square

#3F17B4 #B4173D #8CB417 #17B48E

split-complementary

#3F17B4 #B48E17 #3DB417

monochromatic

#190947 #2C107E #3F17B4 #5525E3 #805BEA

Accessibility & contrast

On white

10.54

#3F17B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#3F17B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F17B4

10.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F17B4	#FFFFFF	#000000	##FFFFFF
##3F17B4	1.00	10.54	1.99	10.54
#FFFFFF	10.54	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044B8

Deuteranopia (green-blind)

#0039B1

Tritanopia (blue-blind)

#004C6A

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #3f17b4;
/* rgb */ color: rgb(63, 23, 180);
/* oklch */ color: oklch(39.4% 0.217 281.4);

Tailwind

colors: {
  custom: {
    50: '#855ecc',
    500: '#3f17b4',
    950: '#000000',
  },
}

SCSS

$custom: #3f17b4;
$custom-light: #855ecc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f17b4",
  "rgb": {
    "r": 63,
    "g": 23,
    "b": 180
  },
  "hsl": {
    "h": 255.287,
    "s": 77.34,
    "l": 39.804
  },
  "oklch": {
    "l": 0.39379,
    "c": 0.21743,
    "h": 281.4
  },
  "luminance": 0.04965
}

Semantic roles & 50–950 ramp

primary

#3F17B4

secondary

#B0CE59

accent

#F434C3

background

#F8F5FC

surface

#F0E9F9

border

#CBC5D2

text

#0D0514

muted

#7D7982

Preview Lab

Preview with #3F17B4

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

Preview Lab → · Contrast checker → · Palette generator →