#3F18A1#3F18A1

#3F18A1 is a dark, vivid violet. Relative luminance 0.043; OKLCH L 37.4% C 0.196 H 284.7°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#3F18A1
RGB	rgb(63, 24, 161)
HSL	hsl(257, 74%, 36%)
HSV	hsv(257, 85%, 63%)
CMYK	cmyk(60.9%, 85.1%, 0%, 36.9%)
CIE-LAB	lab(24.58, 51.33, -65.81)
CIE-LCH	lch(24.58, 83.46, 307.95°)
OKLab	oklab(37.35% 0.0498 -0.1897)
OKLCH	oklch(37.35% 0.196 284.7)
XYZ	xyz(8.8076, 4.2827, 34.0738)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F18A1 #7AA118

analogous

#1836A1 #3F18A1 #8418A1

triadic

#3F18A1 #A13F18 #18A13F

tetradic

#3F18A1 #A11836 #7AA118 #18A184

square

#3F18A1 #A11836 #7AA118 #18A184

split-complementary

#3F18A1 #A18418 #36A118

monochromatic

#150836 #2A106C #3F18A1 #5420D6 #794FE5

Accessibility & contrast

On white

11.31

#3F18A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#3F18A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F18A1

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F18A1	#FFFFFF	#000000	##FFFFFF
##3F18A1	1.00	11.31	1.86	11.31
#FFFFFF	11.31	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003EA5

Deuteranopia (green-blind)

#00369F

Tritanopia (blue-blind)

#00445F

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #3f18a1;
/* rgb */ color: rgb(63, 24, 161);
/* oklch */ color: oklch(37.4% 0.196 284.7);

Tailwind

colors: {
  custom: {
    50: '#815dbe',
    500: '#3f18a1',
    950: '#000000',
  },
}

SCSS

$custom: #3f18a1;
$custom-light: #815dbe;
$custom-dark: #000000;

JSON

{
  "hex": "#3f18a1",
  "rgb": {
    "r": 63,
    "g": 24,
    "b": 161
  },
  "hsl": {
    "h": 257.08,
    "s": 74.054,
    "l": 36.275
  },
  "oklch": {
    "l": 0.3735,
    "c": 0.1961,
    "h": 284.7
  },
  "luminance": 0.04283
}

Semantic roles & 50–950 ramp

primary

#3F18A1

secondary

#A4C74E

accent

#F137BC

background

#F8F5FB

surface

#F0E9F7

border

#CBC5D0

text

#0C0412

muted

#7D7981

Preview Lab

Preview with #3F18A1

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

Preview Lab → · Contrast checker → · Palette generator →