#661F8B#661F8B

#661F8B is a dark, vivid violet. Relative luminance 0.057; OKLCH L 40.6% C 0.171 H 310.9°. Best body text is #FFFFFF at 9.84:1 contrast (WCAG AA passes).

Color values

HEX	#661F8B
RGB	rgb(102, 31, 139)
HSL	hsl(279, 64%, 33%)
HSV	hsv(279, 78%, 55%)
CMYK	cmyk(26.6%, 77.7%, 0%, 45.5%)
CIE-LAB	lab(28.56, 48.81, -45.56)
CIE-LCH	lch(28.56, 66.77, 316.97°)
OKLab	oklab(40.61% 0.1117 -0.1291)
OKLCH	oklch(40.61% 0.171 310.9)
XYZ	xyz(10.6288, 5.6691, 24.9554)
Luminance	0.0567 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

#4B006E

ΔE00 7.28

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661F8B #448B1F

analogous

#301F8B #661F8B #8B1F7A

triadic

#661F8B #8B661F #1F8B66

tetradic

#661F8B #8B301F #448B1F #1F7A8B

square

#661F8B #8B301F #448B1F #1F7A8B

split-complementary

#661F8B #7A8B1F #1F8B30

monochromatic

#1D0927 #411459 #661F8B #8B2ABD #A84DD7

Accessibility & contrast

On white

9.84

#661F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#661F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661F8B

9.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661F8B	#FFFFFF	#000000	##FFFFFF
##661F8B	1.00	9.84	2.13	9.84
#FFFFFF	9.84	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408E

Deuteranopia (green-blind)

#064589

Tritanopia (blue-blind)

#613954

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #661f8b;
/* rgb */ color: rgb(102, 31, 139);
/* oklch */ color: oklch(40.6% 0.171 310.9);

Tailwind

colors: {
  custom: {
    50: '#9663ae',
    500: '#661f8b',
    950: '#000000',
  },
}

SCSS

$custom: #661f8b;
$custom-light: #9663ae;
$custom-dark: #000000;

JSON

{
  "hex": "#661f8b",
  "rgb": {
    "r": 102,
    "g": 31,
    "b": 139
  },
  "hsl": {
    "h": 279.444,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.40605,
    "c": 0.17071,
    "h": 310.9
  },
  "luminance": 0.05669
}

Semantic roles & 50–950 ramp

primary

#661F8B

secondary

#72BA4C

accent

#E7417A

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0E0610

muted

#7E7A7F

Preview Lab

Preview with #661F8B

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

Preview Lab → · Contrast checker → · Palette generator →