Nearest-color comparison
Grape #6F2DA8 vs Rebecca Purple #663399: RGB distance 18.5 and contrast 1.05:1. Compare hue, luminance, saturation, WCAG and practical use.
Grape and Rebecca Purple are very close, with an RGB distance of 18.5. Grape is lighter by 0.0059, and Grape is more saturated by 8 percentage points. Their mutual contrast is 1.05:1. The pair is too close for a readable foreground/background combination and works better as neighboring palette colors.
The main measurable differences between Grape and Rebecca Purple across RGB distance, luminance, hue, saturation, and contrast.
purple color
Grape is #6F2DA8, a cool purple with hue 272°, saturation 58% and luminance 0.0808. Beside Rebecca Purple, it is lighter and more saturated. Of the two standard text choices, white text gives the higher contrast at 8.03:1.
purple color
Rebecca Purple is #663399, a cool purple with hue 270°, saturation 50% and luminance 0.0749. Beside Grape, it is darker and less 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 Grape 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": "grape",
"name": "Grape",
"hex": "#6F2DA8",
"rgb": [
111,
45,
168
],
"hsl": [
272,
58,
42
],
"cmyk": [
34,
73,
0,
34
],
"family": "purple",
"temperature": "cool",
"tone": [
"jewel-tone"
],
"luminance": 0.0808,
"contrast": {
"black": 2.62,
"white": 8.03
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": [
"#FFFFFF",
"#F5F5F5"
]
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 8.03
},
"description": "Grape is #6F2DA8, a cool purple color with jewel tone character. Compared with Rebecca Purple, it is lighter and more 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/grape/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/grape.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 Grape, it is darker and less 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": 18.5,
"contrastRatio": 1.05,
"hslDelta": {
"hue": 2,
"saturation": 8,
"lightness": 2
},
"luminanceDelta": 0.0059,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [
"jewel-tone"
],
"lighterColor": "Grape",
"moreSaturatedColor": "Grape"
}{
"pairContrastRatio": 1.05,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Grape",
"background": "#6F2DA8",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 8.03
},
{
"color": "Rebecca Purple",
"background": "#663399",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 8.41
}
]
}{
"chooseFirstWhen": "Grape is better when the design needs jewel tone purple character, cool temperature, and the specific HEX value #6F2DA8.",
"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/grape-vs-rebecca-purple.json",
"https://www.colorsencyclopedia.com/api/colors/grape.json",
"https://www.colorsencyclopedia.com/api/colors/rebecca-purple.json"
]{
"datasetVersion": "1.0.0",
"slug": "grape-vs-rebecca-purple",
"type": "nearest",
"name": "Grape vs Rebecca Purple",
"verdict": "Grape and Rebecca Purple are very close colors. Grape is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.05:1, so the pair is too low for text and better treated as a palette relationship.",
"summary": "Grape and Rebecca Purple are different purple colors with HEX values #6F2DA8 and #663399. According to Colors Encyclopedia, their RGB distance is 18.5, their contrast ratio is 1.05:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
"rgbDistance": 18.5,
"contrastRatio": 1.05,
"colors": [
{
"slug": "grape",
"name": "Grape",
"hex": "#6F2DA8",
"rgb": [
111,
45,
168
],
"hsl": [
272,
58,
42
],
"cmyk": [
34,
73,
0,
34
],
"family": "purple",
"temperature": "cool",
"tone": [
"jewel-tone"
],
"luminance": 0.0808,
"contrast": {
"black": 2.62,
"white": 8.03
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": [
"#FFFFFF",
"#F5F5F5"
]
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 8.03
},
"description": "Grape is #6F2DA8, a cool purple color with jewel tone character. Compared with Rebecca Purple, it is lighter and more 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/grape/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/grape.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 Grape, it is darker and less 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": 18.5,
"contrastRatio": 1.05,
"hslDelta": {
"hue": 2,
"saturation": 8,
"lightness": 2
},
"luminanceDelta": 0.0059,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [
"jewel-tone"
],
"lighterColor": "Grape",
"moreSaturatedColor": "Grape"
},
"accessibility": {
"pairContrastRatio": 1.05,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Grape",
"background": "#6F2DA8",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 8.03
},
{
"color": "Rebecca Purple",
"background": "#663399",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 8.41
}
]
},
"useCases": {
"chooseFirstWhen": "Grape is better when the design needs jewel tone purple character, cool temperature, and the specific HEX value #6F2DA8.",
"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/grape-vs-rebecca-purple.json",
"https://www.colorsencyclopedia.com/api/colors/grape.json",
"https://www.colorsencyclopedia.com/api/colors/rebecca-purple.json"
],
"url": "https://www.colorsencyclopedia.com/compare/grape-vs-rebecca-purple/",
"apiUrl": "https://www.colorsencyclopedia.com/api/compare/grape-vs-rebecca-purple.json"
}