#551B7D#551B7D

#551B7D is a dark, vivid violet. Relative luminance 0.042; OKLCH L 36.7% C 0.156 H 307.1°. Best body text is #FFFFFF at 11.42:1 contrast (WCAG AA passes).

Color values

HEX	#551B7D
RGB	rgb(85, 27, 125)
HSL	hsl(276, 64%, 30%)
HSV	hsv(276, 78%, 49%)
CMYK	cmyk(32%, 78.4%, 0%, 51%)
CIE-LAB	lab(24.31, 43.90, -43.80)
CIE-LCH	lch(24.31, 62.01, 315.06°)
OKLab	oklab(36.73% 0.0941 -0.1245)
OKLCH	oklch(36.73% 0.156 307.1)
XYZ	xyz(7.8391, 4.1959, 19.7950)
Luminance	0.0420 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 4.14

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B7D #437D1B

analogous

#241B7D #551B7D #7D1B74

triadic

#551B7D #7D551B #1B7D55

tetradic

#551B7D #7D241B #437D1B #1B747D

square

#551B7D #7D241B #437D1B #1B747D

split-complementary

#551B7D #747D1B #1B7D24

monochromatic

#110519 #33104B #551B7D #7726AF #973DD5

Accessibility & contrast

On white

11.42

#551B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#551B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B7D

11.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B7D	#FFFFFF	#000000	##FFFFFF
##551B7D	1.00	11.42	1.84	11.42
#FFFFFF	11.42	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003880

Deuteranopia (green-blind)

#003A7B

Tritanopia (blue-blind)

#4E334B

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #551b7d;
/* rgb */ color: rgb(85, 27, 125);
/* oklch */ color: oklch(36.7% 0.156 307.1);

Tailwind

colors: {
  custom: {
    50: '#895ea3',
    500: '#551b7d',
    950: '#000000',
  },
}

SCSS

$custom: #551b7d;
$custom-light: #895ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#551b7d",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 125
  },
  "hsl": {
    "h": 275.51,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.36725,
    "c": 0.15607,
    "h": 307.1
  },
  "luminance": 0.04196
}

Semantic roles & 50–950 ramp

primary

#551B7D

secondary

#70B143

accent

#E74085

background

#F8F5FA

surface

#F0E9F4

border

#CBC5CE

text

#0C050F

muted

#7D797F

Preview Lab

Preview with #551B7D

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

Preview Lab → · Contrast checker → · Palette generator →