Nearest-color comparison
Slate Grey #708090 vs Light Slate Gray #778899: RGB distance 13.9 and contrast 1.11:1. Compare hue, luminance, saturation, WCAG and practical use.
Slate Grey and Light Slate Gray are very close, with an RGB distance of 13.9. Light Slate Gray is lighter by 0.0293, and Light Slate Gray is more saturated by 1 percentage points. Their mutual contrast is 1.11:1. The pair is too close for a readable foreground/background combination and works better as neighboring palette colors.
The main measurable differences between Slate Grey and Light Slate Gray across RGB distance, luminance, hue, saturation, and contrast.
blue color
Slate Grey is #708090, a cool blue with hue 210°, saturation 13% and luminance 0.209. Beside Light Slate Gray, it is darker and less saturated. Of the two standard text choices, black text gives the higher contrast at 5.18:1.
blue color
Light Slate Gray is #778899, a cool blue with hue 210°, saturation 14% and luminance 0.2383. Beside Slate Grey, it is lighter and more saturated. Of the two standard text choices, black text gives the higher contrast at 5.77:1.
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 Slate Grey and Light Slate Gray, 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": "slate-grey",
"name": "Slate Grey",
"hex": "#708090",
"rgb": [
112,
128,
144
],
"hsl": [
210,
13,
50
],
"cmyk": [
22,
11,
0,
44
],
"family": "blue",
"temperature": "cool",
"tone": [
"muted"
],
"luminance": 0.209,
"contrast": {
"black": 5.18,
"white": 4.05
},
"wcag": {
"AA": [
"#000000"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.18
},
"description": "Slate Grey is #708090, a cool blue color with muted character. Compared with Light Slate Gray, it is darker 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/slate-grey/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/slate-grey.json"
},
{
"slug": "light-slate-gray",
"name": "Light Slate Gray",
"hex": "#778899",
"rgb": [
119,
136,
153
],
"hsl": [
210,
14,
53
],
"cmyk": [
22,
11,
0,
40
],
"family": "blue",
"temperature": "cool",
"tone": [
"muted"
],
"luminance": 0.2383,
"contrast": {
"black": 5.77,
"white": 3.64
},
"wcag": {
"AA": [
"#000000",
"#1A1A1A"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.77
},
"description": "Light Slate Gray is #778899, a cool blue color with muted character. Compared with Slate Grey, it is lighter 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/light-slate-gray/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/light-slate-gray.json"
}
]{
"rgbDistance": 13.9,
"contrastRatio": 1.11,
"hslDelta": {
"hue": 0,
"saturation": 1,
"lightness": 3
},
"luminanceDelta": 0.0293,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [
"muted"
],
"lighterColor": "Light Slate Gray",
"moreSaturatedColor": "Light Slate Gray"
}{
"pairContrastRatio": 1.11,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Slate Grey",
"background": "#708090",
"foreground": "#000000",
"label": "black text",
"ratio": 5.18
},
{
"color": "Light Slate Gray",
"background": "#778899",
"foreground": "#000000",
"label": "black text",
"ratio": 5.77
}
]
}{
"chooseFirstWhen": "Slate Grey is better when the design needs muted blue character, cool temperature, and the specific HEX value #708090.",
"chooseSecondWhen": "Light Slate Gray is better when the design needs muted blue character, cool temperature, and the specific HEX value #778899.",
"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/slate-grey-vs-light-slate-gray.json",
"https://www.colorsencyclopedia.com/api/colors/slate-grey.json",
"https://www.colorsencyclopedia.com/api/colors/light-slate-gray.json"
]{
"datasetVersion": "1.0.0",
"slug": "slate-grey-vs-light-slate-gray",
"type": "nearest",
"name": "Slate Grey vs Light Slate Gray",
"verdict": "Slate Grey and Light Slate Gray are very close colors. Light Slate Gray is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.11:1, so the pair is too low for text and better treated as a palette relationship.",
"summary": "Slate Grey and Light Slate Gray are different blue colors with HEX values #708090 and #778899. According to Colors Encyclopedia, their RGB distance is 13.9, their contrast ratio is 1.11:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
"rgbDistance": 13.9,
"contrastRatio": 1.11,
"colors": [
{
"slug": "slate-grey",
"name": "Slate Grey",
"hex": "#708090",
"rgb": [
112,
128,
144
],
"hsl": [
210,
13,
50
],
"cmyk": [
22,
11,
0,
44
],
"family": "blue",
"temperature": "cool",
"tone": [
"muted"
],
"luminance": 0.209,
"contrast": {
"black": 5.18,
"white": 4.05
},
"wcag": {
"AA": [
"#000000"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.18
},
"description": "Slate Grey is #708090, a cool blue color with muted character. Compared with Light Slate Gray, it is darker 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/slate-grey/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/slate-grey.json"
},
{
"slug": "light-slate-gray",
"name": "Light Slate Gray",
"hex": "#778899",
"rgb": [
119,
136,
153
],
"hsl": [
210,
14,
53
],
"cmyk": [
22,
11,
0,
40
],
"family": "blue",
"temperature": "cool",
"tone": [
"muted"
],
"luminance": 0.2383,
"contrast": {
"black": 5.77,
"white": 3.64
},
"wcag": {
"AA": [
"#000000",
"#1A1A1A"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.77
},
"description": "Light Slate Gray is #778899, a cool blue color with muted character. Compared with Slate Grey, it is lighter 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/light-slate-gray/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/light-slate-gray.json"
}
],
"differences": {
"rgbDistance": 13.9,
"contrastRatio": 1.11,
"hslDelta": {
"hue": 0,
"saturation": 1,
"lightness": 3
},
"luminanceDelta": 0.0293,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [
"muted"
],
"lighterColor": "Light Slate Gray",
"moreSaturatedColor": "Light Slate Gray"
},
"accessibility": {
"pairContrastRatio": 1.11,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Slate Grey",
"background": "#708090",
"foreground": "#000000",
"label": "black text",
"ratio": 5.18
},
{
"color": "Light Slate Gray",
"background": "#778899",
"foreground": "#000000",
"label": "black text",
"ratio": 5.77
}
]
},
"useCases": {
"chooseFirstWhen": "Slate Grey is better when the design needs muted blue character, cool temperature, and the specific HEX value #708090.",
"chooseSecondWhen": "Light Slate Gray is better when the design needs muted blue character, cool temperature, and the specific HEX value #778899.",
"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/slate-grey-vs-light-slate-gray.json",
"https://www.colorsencyclopedia.com/api/colors/slate-grey.json",
"https://www.colorsencyclopedia.com/api/colors/light-slate-gray.json"
],
"url": "https://www.colorsencyclopedia.com/compare/slate-grey-vs-light-slate-gray/",
"apiUrl": "https://www.colorsencyclopedia.com/api/compare/slate-grey-vs-light-slate-gray.json"
}