Nearest-color comparison
River Stone #7E8A8A vs Titanium #878681: RGB distance 13.3 and contrast 1.02:1. Compare hue, luminance, saturation, WCAG and practical use.
River Stone and Titanium are very close, with an RGB distance of 13.3. River Stone is lighter by 0.0066, and River Stone is more saturated by 3 percentage points. Their mutual contrast is 1.02:1. The pair is too close for a readable foreground/background combination and works better as neighboring palette colors.
The main measurable differences between River Stone and Titanium across RGB distance, luminance, hue, saturation, and contrast.
gray color
River Stone is #7E8A8A, a neutral gray with hue 180°, saturation 5% and luminance 0.2445. Beside Titanium, it is lighter and more saturated. Of the two standard text choices, black text gives the higher contrast at 5.89:1.
gray color
Titanium is #878681, a neutral gray with hue 50°, saturation 2% and luminance 0.2379. Beside River Stone, it is darker and less saturated. Of the two standard text choices, black text gives the higher contrast at 5.76:1.
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 River Stone and Titanium, 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": "river-stone",
"name": "River Stone",
"hex": "#7E8A8A",
"rgb": [
126,
138,
138
],
"hsl": [
180,
5,
52
],
"cmyk": [
9,
0,
0,
46
],
"family": "gray",
"temperature": "neutral",
"tone": [
"muted"
],
"luminance": 0.2445,
"contrast": {
"black": 5.89,
"white": 3.57
},
"wcag": {
"AA": [
"#000000",
"#1A1A1A"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.89
},
"description": "River Stone is #7E8A8A, a neutral gray color with muted character. Compared with Titanium, it is lighter and more saturated. Use it for earth-tone palettes, interior design, and material-inspired branding, with black text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/river-stone/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/river-stone.json"
},
{
"slug": "titanium",
"name": "Titanium",
"hex": "#878681",
"rgb": [
135,
134,
129
],
"hsl": [
50,
2,
52
],
"cmyk": [
0,
1,
4,
47
],
"family": "gray",
"temperature": "neutral",
"tone": [
"muted"
],
"luminance": 0.2379,
"contrast": {
"black": 5.76,
"white": 3.65
},
"wcag": {
"AA": [
"#000000",
"#1A1A1A"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.76
},
"description": "Titanium is #878681, a neutral gray color with muted character. Compared with River Stone, it is darker and less saturated. Use it for metallic palettes, product finishes, and premium packaging, with black text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/titanium/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/titanium.json"
}
]{
"rgbDistance": 13.3,
"contrastRatio": 1.02,
"hslDelta": {
"hue": 130,
"saturation": 3,
"lightness": 0
},
"luminanceDelta": 0.0066,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [
"muted"
],
"lighterColor": "River Stone",
"moreSaturatedColor": "River Stone"
}{
"pairContrastRatio": 1.02,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "River Stone",
"background": "#7E8A8A",
"foreground": "#000000",
"label": "black text",
"ratio": 5.89
},
{
"color": "Titanium",
"background": "#878681",
"foreground": "#000000",
"label": "black text",
"ratio": 5.76
}
]
}{
"chooseFirstWhen": "River Stone is better when the design needs muted gray character, neutral temperature, and the specific HEX value #7E8A8A.",
"chooseSecondWhen": "Titanium is better when the design needs muted gray character, neutral temperature, and the specific HEX value #878681.",
"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/river-stone-vs-titanium.json",
"https://www.colorsencyclopedia.com/api/colors/river-stone.json",
"https://www.colorsencyclopedia.com/api/colors/titanium.json"
]{
"datasetVersion": "1.0.0",
"slug": "river-stone-vs-titanium",
"type": "nearest",
"name": "River Stone vs Titanium",
"verdict": "River Stone and Titanium are very close colors. River Stone is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.02:1, so the pair is too low for text and better treated as a palette relationship.",
"summary": "River Stone and Titanium are different gray colors with HEX values #7E8A8A and #878681. According to Colors Encyclopedia, their RGB distance is 13.3, their contrast ratio is 1.02:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
"rgbDistance": 13.3,
"contrastRatio": 1.02,
"colors": [
{
"slug": "river-stone",
"name": "River Stone",
"hex": "#7E8A8A",
"rgb": [
126,
138,
138
],
"hsl": [
180,
5,
52
],
"cmyk": [
9,
0,
0,
46
],
"family": "gray",
"temperature": "neutral",
"tone": [
"muted"
],
"luminance": 0.2445,
"contrast": {
"black": 5.89,
"white": 3.57
},
"wcag": {
"AA": [
"#000000",
"#1A1A1A"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.89
},
"description": "River Stone is #7E8A8A, a neutral gray color with muted character. Compared with Titanium, it is lighter and more saturated. Use it for earth-tone palettes, interior design, and material-inspired branding, with black text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/river-stone/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/river-stone.json"
},
{
"slug": "titanium",
"name": "Titanium",
"hex": "#878681",
"rgb": [
135,
134,
129
],
"hsl": [
50,
2,
52
],
"cmyk": [
0,
1,
4,
47
],
"family": "gray",
"temperature": "neutral",
"tone": [
"muted"
],
"luminance": 0.2379,
"contrast": {
"black": 5.76,
"white": 3.65
},
"wcag": {
"AA": [
"#000000",
"#1A1A1A"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.76
},
"description": "Titanium is #878681, a neutral gray color with muted character. Compared with River Stone, it is darker and less saturated. Use it for metallic palettes, product finishes, and premium packaging, with black text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/titanium/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/titanium.json"
}
],
"differences": {
"rgbDistance": 13.3,
"contrastRatio": 1.02,
"hslDelta": {
"hue": 130,
"saturation": 3,
"lightness": 0
},
"luminanceDelta": 0.0066,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [
"muted"
],
"lighterColor": "River Stone",
"moreSaturatedColor": "River Stone"
},
"accessibility": {
"pairContrastRatio": 1.02,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "River Stone",
"background": "#7E8A8A",
"foreground": "#000000",
"label": "black text",
"ratio": 5.89
},
{
"color": "Titanium",
"background": "#878681",
"foreground": "#000000",
"label": "black text",
"ratio": 5.76
}
]
},
"useCases": {
"chooseFirstWhen": "River Stone is better when the design needs muted gray character, neutral temperature, and the specific HEX value #7E8A8A.",
"chooseSecondWhen": "Titanium is better when the design needs muted gray character, neutral temperature, and the specific HEX value #878681.",
"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/river-stone-vs-titanium.json",
"https://www.colorsencyclopedia.com/api/colors/river-stone.json",
"https://www.colorsencyclopedia.com/api/colors/titanium.json"
],
"url": "https://www.colorsencyclopedia.com/compare/river-stone-vs-titanium/",
"apiUrl": "https://www.colorsencyclopedia.com/api/compare/river-stone-vs-titanium.json"
}