Nearest-color comparison
Medium Purple #9370DB vs Medium Slate Blue #7B68EE: RGB distance 31.6 and contrast 1.1:1. Compare hue, luminance, saturation, WCAG and practical use.
Medium Purple and Medium Slate Blue are related but distinguishable, with an RGB distance of 31.6. Medium Purple is lighter by 0.0263, and Medium Slate Blue is more saturated by 20 percentage points. Their mutual contrast is 1.1:1. The pair is too close for a readable foreground/background combination and works better as neighboring palette colors.
The main measurable differences between Medium Purple and Medium Slate Blue across RGB distance, luminance, hue, saturation, and contrast.
purple color
Medium Purple is #9370DB, a cool purple with hue 260°, saturation 60% and luminance 0.2291. Beside Medium Slate Blue, it is lighter and less saturated. Of the two standard text choices, black text gives the higher contrast at 5.58:1.
blue color
Medium Slate Blue is #7B68EE, a cool blue with hue 249°, saturation 80% and luminance 0.2028. Beside Medium Purple, it is darker and more saturated. Of the two standard text choices, black text gives the higher contrast at 5.06:1.
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 Medium Purple and Medium Slate Blue, 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": "medium-purple",
"name": "Medium Purple",
"hex": "#9370DB",
"rgb": [
147,
112,
219
],
"hsl": [
260,
60,
65
],
"cmyk": [
33,
49,
0,
14
],
"family": "purple",
"temperature": "cool",
"tone": [
"balanced"
],
"luminance": 0.2291,
"contrast": {
"black": 5.58,
"white": 3.76
},
"wcag": {
"AA": [
"#000000",
"#1A1A1A"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.58
},
"description": "Medium Purple is #9370DB, a cool purple color with balanced character. Compared with Medium Slate Blue, it is lighter and less saturated. Use it for web design, css color systems, and ui prototyping, with black text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/medium-purple/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/medium-purple.json"
},
{
"slug": "medium-slate-blue",
"name": "Medium Slate Blue",
"hex": "#7B68EE",
"rgb": [
123,
104,
238
],
"hsl": [
249,
80,
67
],
"cmyk": [
48,
56,
0,
7
],
"family": "blue",
"temperature": "cool",
"tone": [
"vibrant"
],
"luminance": 0.2028,
"contrast": {
"black": 5.06,
"white": 4.15
},
"wcag": {
"AA": [
"#000000"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.06
},
"description": "Medium Slate Blue is #7B68EE, a cool blue color with vibrant character. Compared with Medium Purple, it is darker and more saturated. Use it for web design, css color systems, and ui prototyping, with black text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/medium-slate-blue/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/medium-slate-blue.json"
}
]{
"rgbDistance": 31.6,
"contrastRatio": 1.1,
"hslDelta": {
"hue": 11,
"saturation": 20,
"lightness": 2
},
"luminanceDelta": 0.0263,
"sameFamily": false,
"sameTemperature": true,
"sharedTones": [],
"lighterColor": "Medium Purple",
"moreSaturatedColor": "Medium Slate Blue"
}{
"pairContrastRatio": 1.1,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Medium Purple",
"background": "#9370DB",
"foreground": "#000000",
"label": "black text",
"ratio": 5.58
},
{
"color": "Medium Slate Blue",
"background": "#7B68EE",
"foreground": "#000000",
"label": "black text",
"ratio": 5.06
}
]
}{
"chooseFirstWhen": "Medium Purple is better when the design needs balanced purple character, cool temperature, and the specific HEX value #9370DB.",
"chooseSecondWhen": "Medium Slate Blue is better when the design needs vibrant blue character, cool temperature, and the specific HEX value #7B68EE.",
"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/medium-purple-vs-medium-slate-blue.json",
"https://www.colorsencyclopedia.com/api/colors/medium-purple.json",
"https://www.colorsencyclopedia.com/api/colors/medium-slate-blue.json"
]{
"datasetVersion": "1.0.0",
"slug": "medium-purple-vs-medium-slate-blue",
"type": "nearest",
"name": "Medium Purple vs Medium Slate Blue",
"verdict": "Medium Purple and Medium Slate Blue are visually related colors. Medium Purple is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.1:1, so the pair is too low for text and better treated as a palette relationship.",
"summary": "Medium Purple and Medium Slate Blue are different purple and blue colors with HEX values #9370DB and #7B68EE. According to Colors Encyclopedia, their RGB distance is 31.6, their contrast ratio is 1.1:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
"rgbDistance": 31.6,
"contrastRatio": 1.1,
"colors": [
{
"slug": "medium-purple",
"name": "Medium Purple",
"hex": "#9370DB",
"rgb": [
147,
112,
219
],
"hsl": [
260,
60,
65
],
"cmyk": [
33,
49,
0,
14
],
"family": "purple",
"temperature": "cool",
"tone": [
"balanced"
],
"luminance": 0.2291,
"contrast": {
"black": 5.58,
"white": 3.76
},
"wcag": {
"AA": [
"#000000",
"#1A1A1A"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.58
},
"description": "Medium Purple is #9370DB, a cool purple color with balanced character. Compared with Medium Slate Blue, it is lighter and less saturated. Use it for web design, css color systems, and ui prototyping, with black text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/medium-purple/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/medium-purple.json"
},
{
"slug": "medium-slate-blue",
"name": "Medium Slate Blue",
"hex": "#7B68EE",
"rgb": [
123,
104,
238
],
"hsl": [
249,
80,
67
],
"cmyk": [
48,
56,
0,
7
],
"family": "blue",
"temperature": "cool",
"tone": [
"vibrant"
],
"luminance": 0.2028,
"contrast": {
"black": 5.06,
"white": 4.15
},
"wcag": {
"AA": [
"#000000"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.06
},
"description": "Medium Slate Blue is #7B68EE, a cool blue color with vibrant character. Compared with Medium Purple, it is darker and more saturated. Use it for web design, css color systems, and ui prototyping, with black text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/medium-slate-blue/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/medium-slate-blue.json"
}
],
"differences": {
"rgbDistance": 31.6,
"contrastRatio": 1.1,
"hslDelta": {
"hue": 11,
"saturation": 20,
"lightness": 2
},
"luminanceDelta": 0.0263,
"sameFamily": false,
"sameTemperature": true,
"sharedTones": [],
"lighterColor": "Medium Purple",
"moreSaturatedColor": "Medium Slate Blue"
},
"accessibility": {
"pairContrastRatio": 1.1,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Medium Purple",
"background": "#9370DB",
"foreground": "#000000",
"label": "black text",
"ratio": 5.58
},
{
"color": "Medium Slate Blue",
"background": "#7B68EE",
"foreground": "#000000",
"label": "black text",
"ratio": 5.06
}
]
},
"useCases": {
"chooseFirstWhen": "Medium Purple is better when the design needs balanced purple character, cool temperature, and the specific HEX value #9370DB.",
"chooseSecondWhen": "Medium Slate Blue is better when the design needs vibrant blue character, cool temperature, and the specific HEX value #7B68EE.",
"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/medium-purple-vs-medium-slate-blue.json",
"https://www.colorsencyclopedia.com/api/colors/medium-purple.json",
"https://www.colorsencyclopedia.com/api/colors/medium-slate-blue.json"
],
"url": "https://www.colorsencyclopedia.com/compare/medium-purple-vs-medium-slate-blue/",
"apiUrl": "https://www.colorsencyclopedia.com/api/compare/medium-purple-vs-medium-slate-blue.json"
}