Nearest-color comparison
Dark Slate Grey #2F4F4F vs Spruce #2E4F4F: RGB distance 1 and contrast 1:1. Compare hue, luminance, saturation, WCAG and practical use.
Dark Slate Grey and Spruce are very close, with an RGB distance of 1. Dark Slate Grey is lighter by 0.0002, and Spruce is more saturated by 1 percentage points. Their mutual contrast is 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 Dark Slate Grey and Spruce across RGB distance, luminance, hue, saturation, and contrast.
cyan color
Dark Slate Grey is #2F4F4F, a cool cyan with hue 180°, saturation 25% and luminance 0.0676. Beside Spruce, it is lighter and less saturated. Of the two standard text choices, white text gives the higher contrast at 8.93:1.
cyan color
Spruce is #2E4F4F, a cool cyan with hue 180°, saturation 26% and luminance 0.0674. Beside Dark Slate Grey, it is darker and more saturated. Of the two standard text choices, white text gives the higher contrast at 8.94:1.
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 Dark Slate Grey and Spruce, 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": "dark-slate-grey",
"name": "Dark Slate Grey",
"hex": "#2F4F4F",
"rgb": [
47,
79,
79
],
"hsl": [
180,
25,
25
],
"cmyk": [
41,
0,
0,
69
],
"family": "cyan",
"temperature": "cool",
"tone": [
"muted"
],
"luminance": 0.0676,
"contrast": {
"black": 2.35,
"white": 8.93
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": [
"#FFFFFF",
"#F5F5F5"
]
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 8.93
},
"description": "Dark Slate Grey is #2F4F4F, a cool cyan color with muted character. Compared with Spruce, it is lighter and less saturated. Use it for web design, css color systems, and ui prototyping, with white text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/dark-slate-grey/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/dark-slate-grey.json"
},
{
"slug": "spruce",
"name": "Spruce",
"hex": "#2E4F4F",
"rgb": [
46,
79,
79
],
"hsl": [
180,
26,
25
],
"cmyk": [
42,
0,
0,
69
],
"family": "cyan",
"temperature": "cool",
"tone": [
"muted"
],
"luminance": 0.0674,
"contrast": {
"black": 2.35,
"white": 8.94
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": [
"#FFFFFF",
"#F5F5F5"
]
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 8.94
},
"description": "Spruce is #2E4F4F, a cool cyan color with muted character. Compared with Dark Slate Grey, it is darker and more saturated. Use it for natural palettes, wellness branding, and sustainability design, with white text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/spruce/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/spruce.json"
}
]{
"rgbDistance": 1,
"contrastRatio": 1,
"hslDelta": {
"hue": 0,
"saturation": 1,
"lightness": 0
},
"luminanceDelta": 0.0002,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [
"muted"
],
"lighterColor": "Dark Slate Grey",
"moreSaturatedColor": "Spruce"
}{
"pairContrastRatio": 1,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Dark Slate Grey",
"background": "#2F4F4F",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 8.93
},
{
"color": "Spruce",
"background": "#2E4F4F",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 8.94
}
]
}{
"chooseFirstWhen": "Dark Slate Grey is better when the design needs muted cyan character, cool temperature, and the specific HEX value #2F4F4F.",
"chooseSecondWhen": "Spruce is better when the design needs muted cyan character, cool temperature, and the specific HEX value #2E4F4F.",
"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/dark-slate-grey-vs-spruce.json",
"https://www.colorsencyclopedia.com/api/colors/dark-slate-grey.json",
"https://www.colorsencyclopedia.com/api/colors/spruce.json"
]{
"datasetVersion": "1.0.0",
"slug": "dark-slate-grey-vs-spruce",
"type": "nearest",
"name": "Dark Slate Grey vs Spruce",
"verdict": "Dark Slate Grey and Spruce are very close colors. Dark Slate Grey is the lighter option. They share similar temperature behavior. Their mutual contrast is 1:1, so the pair is too low for text and better treated as a palette relationship.",
"summary": "Dark Slate Grey and Spruce are different cyan colors with HEX values #2F4F4F and #2E4F4F. According to Colors Encyclopedia, their RGB distance is 1, their contrast ratio is 1:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
"rgbDistance": 1,
"contrastRatio": 1,
"colors": [
{
"slug": "dark-slate-grey",
"name": "Dark Slate Grey",
"hex": "#2F4F4F",
"rgb": [
47,
79,
79
],
"hsl": [
180,
25,
25
],
"cmyk": [
41,
0,
0,
69
],
"family": "cyan",
"temperature": "cool",
"tone": [
"muted"
],
"luminance": 0.0676,
"contrast": {
"black": 2.35,
"white": 8.93
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": [
"#FFFFFF",
"#F5F5F5"
]
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 8.93
},
"description": "Dark Slate Grey is #2F4F4F, a cool cyan color with muted character. Compared with Spruce, it is lighter and less saturated. Use it for web design, css color systems, and ui prototyping, with white text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/dark-slate-grey/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/dark-slate-grey.json"
},
{
"slug": "spruce",
"name": "Spruce",
"hex": "#2E4F4F",
"rgb": [
46,
79,
79
],
"hsl": [
180,
26,
25
],
"cmyk": [
42,
0,
0,
69
],
"family": "cyan",
"temperature": "cool",
"tone": [
"muted"
],
"luminance": 0.0674,
"contrast": {
"black": 2.35,
"white": 8.94
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": [
"#FFFFFF",
"#F5F5F5"
]
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 8.94
},
"description": "Spruce is #2E4F4F, a cool cyan color with muted character. Compared with Dark Slate Grey, it is darker and more saturated. Use it for natural palettes, wellness branding, and sustainability design, with white text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/spruce/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/spruce.json"
}
],
"differences": {
"rgbDistance": 1,
"contrastRatio": 1,
"hslDelta": {
"hue": 0,
"saturation": 1,
"lightness": 0
},
"luminanceDelta": 0.0002,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [
"muted"
],
"lighterColor": "Dark Slate Grey",
"moreSaturatedColor": "Spruce"
},
"accessibility": {
"pairContrastRatio": 1,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Dark Slate Grey",
"background": "#2F4F4F",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 8.93
},
{
"color": "Spruce",
"background": "#2E4F4F",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 8.94
}
]
},
"useCases": {
"chooseFirstWhen": "Dark Slate Grey is better when the design needs muted cyan character, cool temperature, and the specific HEX value #2F4F4F.",
"chooseSecondWhen": "Spruce is better when the design needs muted cyan character, cool temperature, and the specific HEX value #2E4F4F.",
"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/dark-slate-grey-vs-spruce.json",
"https://www.colorsencyclopedia.com/api/colors/dark-slate-grey.json",
"https://www.colorsencyclopedia.com/api/colors/spruce.json"
],
"url": "https://www.colorsencyclopedia.com/compare/dark-slate-grey-vs-spruce/",
"apiUrl": "https://www.colorsencyclopedia.com/api/compare/dark-slate-grey-vs-spruce.json"
}