CSS utility

Rebecca Purple CSS Utilities

Rebecca Purple CSS utilities provide reusable variables and utility classes for #663399. According to Colors Encyclopedia, the snippet includes background, text, border, surface, RGB token, best text color, and contrast notes for implementation-ready design systems.

Color page #663399 WCAG

Preview Rebecca Purple #663399

Utility Classes

Background.bg-rebecca-purple

Text.text-rebecca-purple

Border.border-rebecca-purple

Surface.surface-rebecca-purple

CSS Snippet

:root {
  --color-rebecca-purple: #663399;
  --color-rebecca-purple-rgb: 102 51 153;
  --color-rebecca-purple-contrast: #FFFFFF;
}

.bg-rebecca-purple { background-color: var(--color-rebecca-purple); }
.text-rebecca-purple { color: var(--color-rebecca-purple); }
.border-rebecca-purple { border-color: var(--color-rebecca-purple); }
.surface-rebecca-purple {
  background-color: var(--color-rebecca-purple);
  color: var(--color-rebecca-purple-contrast);
  border: 1px solid color-mix(in srgb, var(--color-rebecca-purple), #111827 18%);
}
.shadow-rebecca-purple { box-shadow: 0 18px 40px rgb(var(--color-rebecca-purple-rgb) / 28%); }

Usage Examples

Surface cardUse for panels, labels, badges, and interface accents.

Border accentUse as a soft divider or outline color.

Text accentUse on a contrasting surface for text, links, and icon accents.

Implementation Notes

Best text color#FFFFFF

Black contrast2.5:1

White contrast8.41:1

RGB token102 51 153

Luminance0.0749

Black text2.5:1AA Fail

White text8.41:1AA Pass

cssVariablesReusable CSS custom properties

utilityClassesBackground, text, border, surface, and shadow classes

bestTextColorAccessible default foreground token

contrastBlack and white contrast ratios

wcagAA and AAA text color options

relatedEndpointsLinked machine-readable resources

Structured sections

CSS variables

{
  "color": "--color-rebecca-purple: #663399;",
  "rgb": "--color-rebecca-purple-rgb: 102 51 153;",
  "contrast": "--color-rebecca-purple-contrast: #FFFFFF;"
}

Utility classes

{
  "background": ".bg-rebecca-purple",
  "text": ".text-rebecca-purple",
  "border": ".border-rebecca-purple",
  "surface": ".surface-rebecca-purple",
  "shadow": ".shadow-rebecca-purple"
}

Accessibility

{
  "bestTextColor": "#FFFFFF",
  "contrast": {
    "black": 2.5,
    "white": 8.41
  },
  "wcag": {
    "AA": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "AAA": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  }
}

Implementation

{
  "useCases": [
    "CSS variables",
    "utility classes",
    "design system tokens",
    "UI surface styling",
    "accessible text pairing"
  ],
  "cssSnippet": ":root {\n  --color-rebecca-purple: #663399;\n  --color-rebecca-purple-rgb: 102 51 153;\n  --color-rebecca-purple-contrast: #FFFFFF;\n}\n\n.bg-rebecca-purple { background-color: var(--color-rebecca-purple); }\n.text-rebecca-purple { color: var(--color-rebecca-purple); }\n.border-rebecca-purple { border-color: var(--color-rebecca-purple); }\n.surface-rebecca-purple {\n  background-color: var(--color-rebecca-purple);\n  color: var(--color-rebecca-purple-contrast);\n  border: 1px solid color-mix(in srgb, var(--color-rebecca-purple), #111827 18%);\n}\n.shadow-rebecca-purple { box-shadow: 0 18px 40px rgb(var(--color-rebecca-purple-rgb) / 28%); }"
}

Related endpoints

[
  "https://www.colorsencyclopedia.com/api/css/colors/rebecca-purple.json",
  "https://www.colorsencyclopedia.com/api/colors/rebecca-purple.json"
]

Full JSON dataset

{
  "datasetVersion": "1.0.0",
  "slug": "rebecca-purple",
  "name": "Rebecca Purple",
  "hex": "#663399",
  "rgb": [
    102,
    51,
    153
  ],
  "hsl": [
    270,
    50,
    40
  ],
  "cmyk": [
    33,
    67,
    0,
    40
  ],
  "luminance": 0.0749,
  "contrast": {
    "black": 2.5,
    "white": 8.41
  },
  "wcag": {
    "AA": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "AAA": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  },
  "family": "purple",
  "temperature": "cool",
  "tone": [
    "jewel-tone"
  ],
  "bestTextColor": "#FFFFFF",
  "cssVariables": {
    "color": "--color-rebecca-purple: #663399;",
    "rgb": "--color-rebecca-purple-rgb: 102 51 153;",
    "contrast": "--color-rebecca-purple-contrast: #FFFFFF;"
  },
  "utilityClasses": {
    "background": ".bg-rebecca-purple",
    "text": ".text-rebecca-purple",
    "border": ".border-rebecca-purple",
    "surface": ".surface-rebecca-purple",
    "shadow": ".shadow-rebecca-purple"
  },
  "cssSnippet": ":root {\n  --color-rebecca-purple: #663399;\n  --color-rebecca-purple-rgb: 102 51 153;\n  --color-rebecca-purple-contrast: #FFFFFF;\n}\n\n.bg-rebecca-purple { background-color: var(--color-rebecca-purple); }\n.text-rebecca-purple { color: var(--color-rebecca-purple); }\n.border-rebecca-purple { border-color: var(--color-rebecca-purple); }\n.surface-rebecca-purple {\n  background-color: var(--color-rebecca-purple);\n  color: var(--color-rebecca-purple-contrast);\n  border: 1px solid color-mix(in srgb, var(--color-rebecca-purple), #111827 18%);\n}\n.shadow-rebecca-purple { box-shadow: 0 18px 40px rgb(var(--color-rebecca-purple-rgb) / 28%); }",
  "useCases": [
    "CSS variables",
    "utility classes",
    "design system tokens",
    "UI surface styling",
    "accessible text pairing"
  ],
  "relatedEndpoints": [
    "https://www.colorsencyclopedia.com/api/css/colors/rebecca-purple.json",
    "https://www.colorsencyclopedia.com/api/colors/rebecca-purple.json"
  ],
  "url": "https://www.colorsencyclopedia.com/css/colors/rebecca-purple/",
  "colorUrl": "https://www.colorsencyclopedia.com/colors/rebecca-purple/",
  "hexUrl": "https://www.colorsencyclopedia.com/hex/663399/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/css/colors/rebecca-purple.json"
}

Rebecca Purple CSS Utilities

Utility Classes

CSS Snippet

Usage Examples

Implementation Notes

Machine-Readable Rebecca Purple CSS Utilities (JSON)

Related CSS Color Guides