Nearest-color comparison
Labradorite #607D8B vs Slate Grey #708090: RGB distance 17 and contrast 1.08:1. Compare hue, luminance, saturation, WCAG and practical use.
Labradorite and Slate Grey are very close, with an RGB distance of 17. Slate Grey is lighter by 0.0188, and Labradorite is more saturated by 5 percentage points. Their mutual contrast is 1.08:1. The pair is too close for a readable foreground/background combination and works better as neighboring palette colors.
The main measurable differences between Labradorite and Slate Grey across RGB distance, luminance, hue, saturation, and contrast.
blue color
Labradorite is #607D8B, a cool blue with hue 200°, saturation 18% and luminance 0.1902. Beside Slate Grey, it is darker and more saturated. Of the two standard text choices, black text gives the higher contrast at 4.8:1.
blue color
Slate Grey is #708090, a cool blue with hue 210°, saturation 13% and luminance 0.209. Beside Labradorite, it is lighter 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 Labradorite and Slate Grey, 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": "labradorite",
"name": "Labradorite",
"hex": "#607D8B",
"rgb": [
96,
125,
139
],
"hsl": [
200,
18,
46
],
"cmyk": [
31,
10,
0,
45
],
"family": "blue",
"temperature": "cool",
"tone": [
"muted"
],
"luminance": 0.1902,
"contrast": {
"black": 4.8,
"white": 4.37
},
"wcag": {
"AA": [
"#000000"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 4.8
},
"description": "Labradorite is #607D8B, a cool blue color with muted character. Compared with Slate Grey, it is darker and more saturated. Use it for jewel-tone palettes, luxury branding, and premium interface accents, with black text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/labradorite/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/labradorite.json"
},
{
"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 Labradorite, 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/slate-grey/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/slate-grey.json"
}
]{
"rgbDistance": 17,
"contrastRatio": 1.08,
"hslDelta": {
"hue": 10,
"saturation": 5,
"lightness": 4
},
"luminanceDelta": 0.0188,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [
"muted"
],
"lighterColor": "Slate Grey",
"moreSaturatedColor": "Labradorite"
}{
"pairContrastRatio": 1.08,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Labradorite",
"background": "#607D8B",
"foreground": "#000000",
"label": "black text",
"ratio": 4.8
},
{
"color": "Slate Grey",
"background": "#708090",
"foreground": "#000000",
"label": "black text",
"ratio": 5.18
}
]
}{
"chooseFirstWhen": "Labradorite is better when the design needs muted blue character, cool temperature, and the specific HEX value #607D8B.",
"chooseSecondWhen": "Slate Grey 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/labradorite-vs-slate-grey.json",
"https://www.colorsencyclopedia.com/api/colors/labradorite.json",
"https://www.colorsencyclopedia.com/api/colors/slate-grey.json"
]{
"datasetVersion": "1.0.0",
"slug": "labradorite-vs-slate-grey",
"type": "nearest",
"name": "Labradorite vs Slate Grey",
"verdict": "Labradorite and Slate Grey are very close colors. Slate Grey is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.08:1, so the pair is too low for text and better treated as a palette relationship.",
"summary": "Labradorite and Slate Grey are different blue colors with HEX values #607D8B and #708090. According to Colors Encyclopedia, their RGB distance is 17, their contrast ratio is 1.08:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
"rgbDistance": 17,
"contrastRatio": 1.08,
"colors": [
{
"slug": "labradorite",
"name": "Labradorite",
"hex": "#607D8B",
"rgb": [
96,
125,
139
],
"hsl": [
200,
18,
46
],
"cmyk": [
31,
10,
0,
45
],
"family": "blue",
"temperature": "cool",
"tone": [
"muted"
],
"luminance": 0.1902,
"contrast": {
"black": 4.8,
"white": 4.37
},
"wcag": {
"AA": [
"#000000"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 4.8
},
"description": "Labradorite is #607D8B, a cool blue color with muted character. Compared with Slate Grey, it is darker and more saturated. Use it for jewel-tone palettes, luxury branding, and premium interface accents, with black text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/labradorite/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/labradorite.json"
},
{
"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 Labradorite, 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/slate-grey/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/slate-grey.json"
}
],
"differences": {
"rgbDistance": 17,
"contrastRatio": 1.08,
"hslDelta": {
"hue": 10,
"saturation": 5,
"lightness": 4
},
"luminanceDelta": 0.0188,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [
"muted"
],
"lighterColor": "Slate Grey",
"moreSaturatedColor": "Labradorite"
},
"accessibility": {
"pairContrastRatio": 1.08,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Labradorite",
"background": "#607D8B",
"foreground": "#000000",
"label": "black text",
"ratio": 4.8
},
{
"color": "Slate Grey",
"background": "#708090",
"foreground": "#000000",
"label": "black text",
"ratio": 5.18
}
]
},
"useCases": {
"chooseFirstWhen": "Labradorite is better when the design needs muted blue character, cool temperature, and the specific HEX value #607D8B.",
"chooseSecondWhen": "Slate Grey 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/labradorite-vs-slate-grey.json",
"https://www.colorsencyclopedia.com/api/colors/labradorite.json",
"https://www.colorsencyclopedia.com/api/colors/slate-grey.json"
],
"url": "https://www.colorsencyclopedia.com/compare/labradorite-vs-slate-grey/",
"apiUrl": "https://www.colorsencyclopedia.com/api/compare/labradorite-vs-slate-grey.json"
}