Nearest-color comparison
Plum Purple #8E4585 vs Rebecca Purple #663399: RGB distance 48.2 and contrast 1.34:1. Compare hue, luminance, saturation, WCAG and practical use.
Plum Purple and Rebecca Purple are related but distinguishable, with an RGB distance of 48.2. Plum Purple is lighter by 0.0421, and Rebecca Purple is more saturated by 15 percentage points. Their mutual contrast is 1.34:1. The pair is too close for a readable foreground/background combination and works better as neighboring palette colors.
The main measurable differences between Plum Purple and Rebecca Purple across RGB distance, luminance, hue, saturation, and contrast.
pink color
Plum Purple is #8E4585, a warm pink with hue 307°, saturation 35% and luminance 0.117. Beside Rebecca Purple, it is lighter and less saturated. Of the two standard text choices, white text gives the higher contrast at 6.29:1.
purple color
Rebecca Purple is #663399, a cool purple with hue 270°, saturation 50% and luminance 0.0749. Beside Plum Purple, it is darker and more saturated. Of the two standard text choices, white text gives the higher contrast at 8.41:1.
Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.
Downloadable color comparison infographic
Save a high-resolution comparison infographic with both HEX colors, visual distance, mutual contrast, and accessibility guidance.
A compact visual strip showing the two compared colors with nearby harmony and variant context.
Machine-readable data
Structured comparison data for Plum Purple and Rebecca Purple, including color systems, RGB distance, HSL deltas, contrast, accessibility guidance, use cases, and API links.
Colors Encyclopedia
colorsBoth named color records with HEX, RGB, HSL, CMYK, luminance, WCAG, and linksdifferencesRGB distance, HSL deltas, luminance delta, contrast, and shared attributesaccessibilityPair contrast and safer text choices for each coloruseCasesWhen to choose each color and when to use them togetherrelatedApiMachine-readable comparison and color endpoints[
{
"slug": "plum-purple",
"name": "Plum Purple",
"hex": "#8E4585",
"rgb": [
142,
69,
133
],
"hsl": [
307,
35,
41
],
"cmyk": [
0,
51,
6,
44
],
"family": "pink",
"temperature": "warm",
"tone": [
"balanced"
],
"luminance": 0.117,
"contrast": {
"black": 3.34,
"white": 6.29
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": []
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 6.29
},
"description": "Plum Purple is #8E4585, a warm pink color with balanced character. Compared with Rebecca Purple, it is lighter and less saturated. Use it for beauty branding, creative systems, and premium accents, with white text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/plum-purple/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/plum-purple.json"
},
{
"slug": "rebecca-purple",
"name": "Rebecca Purple",
"hex": "#663399",
"rgb": [
102,
51,
153
],
"hsl": [
270,
50,
40
],
"cmyk": [
33,
67,
0,
40
],
"family": "purple",
"temperature": "cool",
"tone": [
"jewel-tone"
],
"luminance": 0.0749,
"contrast": {
"black": 2.5,
"white": 8.41
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": [
"#FFFFFF",
"#F5F5F5"
]
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 8.41
},
"description": "Rebecca Purple is #663399, a cool purple color with jewel tone character. Compared with Plum Purple, it is darker and more saturated. Use it for web design, css color systems, and ui prototyping, with white text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/rebecca-purple/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/rebecca-purple.json"
}
]{
"rgbDistance": 48.2,
"contrastRatio": 1.34,
"hslDelta": {
"hue": 37,
"saturation": 15,
"lightness": 1
},
"luminanceDelta": 0.0421,
"sameFamily": false,
"sameTemperature": false,
"sharedTones": [],
"lighterColor": "Plum Purple",
"moreSaturatedColor": "Rebecca Purple"
}{
"pairContrastRatio": 1.34,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Plum Purple",
"background": "#8E4585",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 6.29
},
{
"color": "Rebecca Purple",
"background": "#663399",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 8.41
}
]
}{
"chooseFirstWhen": "Plum Purple is better when the design needs balanced pink character, warm temperature, and the specific HEX value #8E4585.",
"chooseSecondWhen": "Rebecca Purple is better when the design needs jewel tone purple character, cool temperature, and the specific HEX value #663399.",
"useTogetherWhen": "Use these colors together as related palette neighbors, subtle material differences, or tonal alternatives rather than readable foreground/background pairs."
}[
"https://www.colorsencyclopedia.com/api/compare/plum-purple-vs-rebecca-purple.json",
"https://www.colorsencyclopedia.com/api/colors/plum-purple.json",
"https://www.colorsencyclopedia.com/api/colors/rebecca-purple.json"
]{
"datasetVersion": "1.0.0",
"slug": "plum-purple-vs-rebecca-purple",
"type": "nearest",
"name": "Plum Purple vs Rebecca Purple",
"verdict": "Plum Purple and Rebecca Purple are visually related colors. Plum Purple is the lighter option. Plum Purple reads warmer. Their mutual contrast is 1.34:1, so the pair is too low for text and better treated as a palette relationship.",
"summary": "Plum Purple and Rebecca Purple are different pink and purple colors with HEX values #8E4585 and #663399. According to Colors Encyclopedia, their RGB distance is 48.2, their contrast ratio is 1.34:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
"rgbDistance": 48.2,
"contrastRatio": 1.34,
"colors": [
{
"slug": "plum-purple",
"name": "Plum Purple",
"hex": "#8E4585",
"rgb": [
142,
69,
133
],
"hsl": [
307,
35,
41
],
"cmyk": [
0,
51,
6,
44
],
"family": "pink",
"temperature": "warm",
"tone": [
"balanced"
],
"luminance": 0.117,
"contrast": {
"black": 3.34,
"white": 6.29
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": []
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 6.29
},
"description": "Plum Purple is #8E4585, a warm pink color with balanced character. Compared with Rebecca Purple, it is lighter and less saturated. Use it for beauty branding, creative systems, and premium accents, with white text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/plum-purple/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/plum-purple.json"
},
{
"slug": "rebecca-purple",
"name": "Rebecca Purple",
"hex": "#663399",
"rgb": [
102,
51,
153
],
"hsl": [
270,
50,
40
],
"cmyk": [
33,
67,
0,
40
],
"family": "purple",
"temperature": "cool",
"tone": [
"jewel-tone"
],
"luminance": 0.0749,
"contrast": {
"black": 2.5,
"white": 8.41
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": [
"#FFFFFF",
"#F5F5F5"
]
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 8.41
},
"description": "Rebecca Purple is #663399, a cool purple color with jewel tone character. Compared with Plum Purple, it is darker and more saturated. Use it for web design, css color systems, and ui prototyping, with white text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/rebecca-purple/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/rebecca-purple.json"
}
],
"differences": {
"rgbDistance": 48.2,
"contrastRatio": 1.34,
"hslDelta": {
"hue": 37,
"saturation": 15,
"lightness": 1
},
"luminanceDelta": 0.0421,
"sameFamily": false,
"sameTemperature": false,
"sharedTones": [],
"lighterColor": "Plum Purple",
"moreSaturatedColor": "Rebecca Purple"
},
"accessibility": {
"pairContrastRatio": 1.34,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Plum Purple",
"background": "#8E4585",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 6.29
},
{
"color": "Rebecca Purple",
"background": "#663399",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 8.41
}
]
},
"useCases": {
"chooseFirstWhen": "Plum Purple is better when the design needs balanced pink character, warm temperature, and the specific HEX value #8E4585.",
"chooseSecondWhen": "Rebecca Purple is better when the design needs jewel tone purple character, cool temperature, and the specific HEX value #663399.",
"useTogetherWhen": "Use these colors together as related palette neighbors, subtle material differences, or tonal alternatives rather than readable foreground/background pairs."
},
"relatedApi": [
"https://www.colorsencyclopedia.com/api/compare/plum-purple-vs-rebecca-purple.json",
"https://www.colorsencyclopedia.com/api/colors/plum-purple.json",
"https://www.colorsencyclopedia.com/api/colors/rebecca-purple.json"
],
"url": "https://www.colorsencyclopedia.com/compare/plum-purple-vs-rebecca-purple/",
"apiUrl": "https://www.colorsencyclopedia.com/api/compare/plum-purple-vs-rebecca-purple.json"
}