Nearest-color comparison
Gunmetal #2A3439 vs Jet #343434: RGB distance 11.2 and contrast 1.02:1. Compare hue, luminance, saturation, WCAG and practical use.
Gunmetal and Jet are very close, with an RGB distance of 11.2. Jet is lighter by 0.0019, and Gunmetal is more saturated by 15 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 Gunmetal and Jet across RGB distance, luminance, hue, saturation, and contrast.
blue color
Gunmetal is #2A3439, a cool blue with hue 200°, saturation 15% and luminance 0.0324. Beside Jet, it is darker and more saturated. Of the two standard text choices, white text gives the higher contrast at 12.74:1.
gray color
Jet is #343434, a neutral gray with hue 0°, saturation 0% and luminance 0.0343. Beside Gunmetal, it is lighter and less saturated. Of the two standard text choices, white text gives the higher contrast at 12.46:1.
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 Gunmetal and Jet, 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": "gunmetal",
"name": "Gunmetal",
"hex": "#2A3439",
"rgb": [
42,
52,
57
],
"hsl": [
200,
15,
19
],
"cmyk": [
26,
9,
0,
78
],
"family": "blue",
"temperature": "cool",
"tone": [
"dark"
],
"luminance": 0.0324,
"contrast": {
"black": 1.65,
"white": 12.74
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": [
"#FFFFFF",
"#F5F5F5"
]
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 12.74
},
"description": "Gunmetal is #2A3439, a cool blue color with dark character. Compared with Jet, it is darker and more saturated. Use it for metallic palettes, product finishes, and premium packaging, with white text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/gunmetal/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/gunmetal.json"
},
{
"slug": "jet",
"name": "Jet",
"hex": "#343434",
"rgb": [
52,
52,
52
],
"hsl": [
0,
0,
20
],
"cmyk": [
0,
0,
0,
80
],
"family": "gray",
"temperature": "neutral",
"tone": [
"dark"
],
"luminance": 0.0343,
"contrast": {
"black": 1.69,
"white": 12.46
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": [
"#FFFFFF",
"#F5F5F5"
]
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 12.46
},
"description": "Jet is #343434, a neutral gray color with dark character. Compared with Gunmetal, it is lighter and less saturated. Use it for backgrounds, typography, and product surfaces, with white text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/jet/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/jet.json"
}
]{
"rgbDistance": 11.2,
"contrastRatio": 1.02,
"hslDelta": {
"hue": 200,
"saturation": 15,
"lightness": 1
},
"luminanceDelta": 0.0019,
"sameFamily": false,
"sameTemperature": false,
"sharedTones": [
"dark"
],
"lighterColor": "Jet",
"moreSaturatedColor": "Gunmetal"
}{
"pairContrastRatio": 1.02,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Gunmetal",
"background": "#2A3439",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 12.74
},
{
"color": "Jet",
"background": "#343434",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 12.46
}
]
}{
"chooseFirstWhen": "Gunmetal is better when the design needs dark blue character, cool temperature, and the specific HEX value #2A3439.",
"chooseSecondWhen": "Jet is better when the design needs dark gray character, neutral temperature, and the specific HEX value #343434.",
"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/gunmetal-vs-jet.json",
"https://www.colorsencyclopedia.com/api/colors/gunmetal.json",
"https://www.colorsencyclopedia.com/api/colors/jet.json"
]{
"datasetVersion": "1.0.0",
"slug": "gunmetal-vs-jet",
"type": "nearest",
"name": "Gunmetal vs Jet",
"verdict": "Gunmetal and Jet are very close colors. Jet 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": "Gunmetal and Jet are different blue and gray colors with HEX values #2A3439 and #343434. According to Colors Encyclopedia, their RGB distance is 11.2, their contrast ratio is 1.02:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
"rgbDistance": 11.2,
"contrastRatio": 1.02,
"colors": [
{
"slug": "gunmetal",
"name": "Gunmetal",
"hex": "#2A3439",
"rgb": [
42,
52,
57
],
"hsl": [
200,
15,
19
],
"cmyk": [
26,
9,
0,
78
],
"family": "blue",
"temperature": "cool",
"tone": [
"dark"
],
"luminance": 0.0324,
"contrast": {
"black": 1.65,
"white": 12.74
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": [
"#FFFFFF",
"#F5F5F5"
]
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 12.74
},
"description": "Gunmetal is #2A3439, a cool blue color with dark character. Compared with Jet, it is darker and more saturated. Use it for metallic palettes, product finishes, and premium packaging, with white text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/gunmetal/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/gunmetal.json"
},
{
"slug": "jet",
"name": "Jet",
"hex": "#343434",
"rgb": [
52,
52,
52
],
"hsl": [
0,
0,
20
],
"cmyk": [
0,
0,
0,
80
],
"family": "gray",
"temperature": "neutral",
"tone": [
"dark"
],
"luminance": 0.0343,
"contrast": {
"black": 1.69,
"white": 12.46
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": [
"#FFFFFF",
"#F5F5F5"
]
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 12.46
},
"description": "Jet is #343434, a neutral gray color with dark character. Compared with Gunmetal, it is lighter and less saturated. Use it for backgrounds, typography, and product surfaces, with white text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/jet/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/jet.json"
}
],
"differences": {
"rgbDistance": 11.2,
"contrastRatio": 1.02,
"hslDelta": {
"hue": 200,
"saturation": 15,
"lightness": 1
},
"luminanceDelta": 0.0019,
"sameFamily": false,
"sameTemperature": false,
"sharedTones": [
"dark"
],
"lighterColor": "Jet",
"moreSaturatedColor": "Gunmetal"
},
"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": "Gunmetal",
"background": "#2A3439",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 12.74
},
{
"color": "Jet",
"background": "#343434",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 12.46
}
]
},
"useCases": {
"chooseFirstWhen": "Gunmetal is better when the design needs dark blue character, cool temperature, and the specific HEX value #2A3439.",
"chooseSecondWhen": "Jet is better when the design needs dark gray character, neutral temperature, and the specific HEX value #343434.",
"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/gunmetal-vs-jet.json",
"https://www.colorsencyclopedia.com/api/colors/gunmetal.json",
"https://www.colorsencyclopedia.com/api/colors/jet.json"
],
"url": "https://www.colorsencyclopedia.com/compare/gunmetal-vs-jet/",
"apiUrl": "https://www.colorsencyclopedia.com/api/compare/gunmetal-vs-jet.json"
}