#661B5B#661B5B

#661B5B is a dark, vivid purple. Relative luminance 0.044; OKLCH L 36.9% C 0.132 H 334.4°. Best body text is #FFFFFF at 11.21:1 contrast (WCAG AA passes).

Color values

HEX	#661B5B
RGB	rgb(102, 27, 91)
HSL	hsl(309, 58%, 25%)
HSV	hsv(309, 74%, 40%)
CMYK	cmyk(0%, 73.5%, 10.8%, 60%)
CIE-LAB	lab(24.84, 40.86, -20.80)
CIE-LCH	lch(24.84, 45.85, 333.03°)
OKLab	oklab(36.94% 0.1187 -0.0568)
OKLCH	oklch(36.94% 0.132 334.4)
XYZ	xyz(7.7598, 4.3646, 10.3293)
Luminance	0.0436 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661B5B #1B6626

analogous

#4B1B66 #661B5B #661B35

triadic

#661B5B #5B661B #1B5B66

tetradic

#661B5B #664B1B #1B6626 #1B3566

square

#661B5B #664B1B #1B6626 #1B3566

split-complementary

#661B5B #35661B #1B664B

monochromatic

#180616 #360E30 #661B5B #962886 #C735B1

Accessibility & contrast

On white

11.21

#661B5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#661B5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661B5B

11.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661B5B	#FFFFFF	#000000	##FFFFFF
##661B5B	1.00	11.21	1.87	11.21
#FFFFFF	11.21	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A345D

Deuteranopia (green-blind)

#343F59

Tritanopia (blue-blind)

#6B2138

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #661b5b;
/* rgb */ color: rgb(102, 27, 91);
/* oklch */ color: oklch(36.9% 0.132 334.4);

Tailwind

colors: {
  custom: {
    50: '#945f89',
    500: '#661b5b',
    950: '#000000',
  },
}

SCSS

$custom: #661b5b;
$custom-light: #945f89;
$custom-dark: #000000;

JSON

{
  "hex": "#661b5b",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 91
  },
  "hsl": {
    "h": 308.8,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.3694,
    "c": 0.13162,
    "h": 334.4
  },
  "luminance": 0.04364
}

Semantic roles & 50–950 ramp

primary

#661B5B

secondary

#419B4F

accent

#E15D46

background

#F9F5F8

surface

#F2EAF0

border

#CCC6CB

text

#0D050B

muted

#7E797C

Preview Lab

Preview with #661B5B

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

Preview Lab → · Contrast checker → · Palette generator →