#551C81#551C81

#551C81 is a dark, vivid violet. Relative luminance 0.043; OKLCH L 37.2% C 0.159 H 305.4°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#551C81
RGB	rgb(85, 28, 129)
HSL	hsl(274, 64%, 31%)
HSV	hsv(274, 78%, 51%)
CMYK	cmyk(34.1%, 78.3%, 0%, 49.4%)
CIE-LAB	lab(24.79, 44.44, -45.55)
CIE-LCH	lch(24.79, 63.64, 314.29°)
OKLab	oklab(37.17% 0.0922 -0.1297)
OKLCH	oklch(37.17% 0.159 305.4)
XYZ	xyz(8.1231, 4.3468, 21.1757)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 4.02

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551C81 #48811C

analogous

#221C81 #551C81 #811C7A

triadic

#551C81 #81551C #1C8155

tetradic

#551C81 #81221C #48811C #1C7A81

square

#551C81 #81221C #48811C #1C7A81

split-complementary

#551C81 #7A811C #1C8122

monochromatic

#13061C #34114F #551C81 #7627B3 #9542D6

Accessibility & contrast

On white

11.23

#551C81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#551C81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551C81

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551C81	#FFFFFF	#000000	##FFFFFF
##551C81	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003984

Deuteranopia (green-blind)

#003B7F

Tritanopia (blue-blind)

#4D354D

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #551c81;
/* rgb */ color: rgb(85, 28, 129);
/* oklch */ color: oklch(37.2% 0.159 305.4);

Tailwind

colors: {
  custom: {
    50: '#8a5fa6',
    500: '#551c81',
    950: '#000000',
  },
}

SCSS

$custom: #551c81;
$custom-light: #8a5fa6;
$custom-dark: #000000;

JSON

{
  "hex": "#551c81",
  "rgb": {
    "r": 85,
    "g": 28,
    "b": 129
  },
  "hsl": {
    "h": 273.861,
    "s": 64.331,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37165,
    "c": 0.15912,
    "h": 305.4
  },
  "luminance": 0.04347
}

Semantic roles & 50–950 ramp

primary

#551C81

secondary

#75B444

accent

#E74089

background

#F8F5FA

surface

#F0EAF4

border

#CBC6CE

text

#0C050F

muted

#7D797F

Preview Lab

Preview with #551C81

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

Preview Lab → · Contrast checker → · Palette generator →