Nearest-color comparison
Light Slate Grey #778899 vs Slate Gray #708090: RGB distance 13.9 and contrast 1.11:1. Compare hue, luminance, saturation, WCAG and practical use.
Light Slate Grey and Slate Gray are very close, with an RGB distance of 13.9. Light Slate Grey is lighter by 0.0293, and Light Slate Grey 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 Light Slate Grey and Slate Gray across RGB distance, luminance, hue, saturation, and contrast.
blue color
Light Slate Grey is #778899, a cool blue with hue 210°, saturation 14% and luminance 0.2383. Beside Slate Gray, it is lighter and more saturated. Of the two standard text choices, black text gives the higher contrast at 5.77:1.
blue color
Slate Gray is #708090, a cool blue with hue 210°, saturation 13% and luminance 0.209. Beside Light Slate Grey, it is darker and less saturated. Of the two standard text choices, black text gives the higher contrast at 5.18:1.
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 Light Slate Grey and 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": "light-slate-grey",
"name": "Light Slate Grey",
"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 Grey is #778899, a cool blue color with muted character. Compared with Slate Gray, 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-grey/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/light-slate-grey.json"
},
{
"slug": "slate-gray",
"name": "Slate Gray",
"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 Gray is #708090, a cool blue color with muted character. Compared with Light Slate Grey, 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-gray/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/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 Grey",
"moreSaturatedColor": "Light Slate Grey"
}{
"pairContrastRatio": 1.11,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Light Slate Grey",
"background": "#778899",
"foreground": "#000000",
"label": "black text",
"ratio": 5.77
},
{
"color": "Slate Gray",
"background": "#708090",
"foreground": "#000000",
"label": "black text",
"ratio": 5.18
}
]
}{
"chooseFirstWhen": "Light Slate Grey is better when the design needs muted blue character, cool temperature, and the specific HEX value #778899.",
"chooseSecondWhen": "Slate Gray is better when the design needs muted blue character, cool temperature, and the specific HEX value #708090.",
"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/light-slate-grey-vs-slate-gray.json",
"https://www.colorsencyclopedia.com/api/colors/light-slate-grey.json",
"https://www.colorsencyclopedia.com/api/colors/slate-gray.json"
]{
"datasetVersion": "1.0.0",
"slug": "light-slate-grey-vs-slate-gray",
"type": "nearest",
"name": "Light Slate Grey vs Slate Gray",
"verdict": "Light Slate Grey and Slate Gray are very close colors. Light Slate Grey 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": "Light Slate Grey and Slate Gray are different blue colors with HEX values #778899 and #708090. 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": "light-slate-grey",
"name": "Light Slate Grey",
"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 Grey is #778899, a cool blue color with muted character. Compared with Slate Gray, 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-grey/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/light-slate-grey.json"
},
{
"slug": "slate-gray",
"name": "Slate Gray",
"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 Gray is #708090, a cool blue color with muted character. Compared with Light Slate Grey, 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-gray/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/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 Grey",
"moreSaturatedColor": "Light Slate Grey"
},
"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": "Light Slate Grey",
"background": "#778899",
"foreground": "#000000",
"label": "black text",
"ratio": 5.77
},
{
"color": "Slate Gray",
"background": "#708090",
"foreground": "#000000",
"label": "black text",
"ratio": 5.18
}
]
},
"useCases": {
"chooseFirstWhen": "Light Slate Grey is better when the design needs muted blue character, cool temperature, and the specific HEX value #778899.",
"chooseSecondWhen": "Slate Gray is better when the design needs muted blue character, cool temperature, and the specific HEX value #708090.",
"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/light-slate-grey-vs-slate-gray.json",
"https://www.colorsencyclopedia.com/api/colors/light-slate-grey.json",
"https://www.colorsencyclopedia.com/api/colors/slate-gray.json"
],
"url": "https://www.colorsencyclopedia.com/compare/light-slate-grey-vs-slate-gray/",
"apiUrl": "https://www.colorsencyclopedia.com/api/compare/light-slate-grey-vs-slate-gray.json"
}