#551B74#551B74

#551B74 is a dark, vivid violet. Relative luminance 0.040; OKLCH L 36.0% C 0.147 H 310.8°. Best body text is #FFFFFF at 11.70:1 contrast (WCAG AA passes).

Color values

HEX	#551B74
RGB	rgb(85, 27, 116)
HSL	hsl(279, 62%, 28%)
HSV	hsv(279, 77%, 45%)
CMYK	cmyk(26.7%, 76.7%, 0%, 54.5%)
CIE-LAB	lab(23.59, 41.78, -39.23)
CIE-LCH	lch(23.59, 57.31, 316.81°)
OKLab	oklab(35.99% 0.0959 -0.111)
OKLCH	oklch(35.99% 0.147 310.8)
XYZ	xyz(7.2900, 3.9763, 16.9031)
Luminance	0.0398 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B74 #3A741B

analogous

#281B74 #551B74 #741B66

triadic

#551B74 #74551B #1B7455

tetradic

#551B74 #74281B #3A741B #1B6674

square

#551B74 #74281B #3A741B #1B6674

split-complementary

#551B74 #66741B #1B7428

monochromatic

#120619 #310F42 #551B74 #7927A6 #9C39D1

Accessibility & contrast

On white

11.70

#551B74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#551B74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B74

11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B74	#FFFFFF	#000000	##FFFFFF
##551B74	1.00	11.70	1.80	11.70
#FFFFFF	11.70	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003677

Deuteranopia (green-blind)

#0A3972

Tritanopia (blue-blind)

#512F46

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #551b74;
/* rgb */ color: rgb(85, 27, 116);
/* oklch */ color: oklch(36.0% 0.147 310.8);

Tailwind

colors: {
  custom: {
    50: '#895e9d',
    500: '#551b74',
    950: '#000000',
  },
}

SCSS

$custom: #551b74;
$custom-light: #895e9d;
$custom-dark: #000000;

JSON

{
  "hex": "#551b74",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 116
  },
  "hsl": {
    "h": 279.101,
    "s": 62.238,
    "l": 28.039
  },
  "oklch": {
    "l": 0.35995,
    "c": 0.14673,
    "h": 310.8
  },
  "luminance": 0.03976
}

Semantic roles & 50–950 ramp

primary

#551B74

secondary

#66A942

accent

#E5427B

background

#F8F5F9

surface

#F0E9F2

border

#CBC5CC

text

#0C050E

muted

#7D797E

Preview Lab

Preview with #551B74

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

Preview Lab → · Contrast checker → · Palette generator →