colorsBoth named color records with HEX, RGB, HSL, CMYK, luminance, WCAG, and links
differencesRGB distance, HSL deltas, luminance delta, contrast, and shared attributes
accessibilityPair contrast and safer text choices for each color
useCasesWhen to choose each color and when to use them together
relatedApiMachine-readable comparison and color endpoints
Full JSON dataset
{
"datasetVersion": "1.0.0",
"slug": "steel-blue-vs-tanzanite",
"type": "nearest",
"name": "Steel Blue vs Tanzanite",
"verdict": "Steel Blue and Tanzanite are visually related colors. Steel Blue is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.47:1, so the pair is too low for text and better treated as a palette relationship.",
"summary": "Steel Blue and Tanzanite are different blue colors with HEX values #4682B4 and #4D5DAB. According to Colors Encyclopedia, their RGB distance is 38.7, their contrast ratio is 1.47:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
"rgbDistance": 38.7,
"contrastRatio": 1.47,
"colors": [
{
"slug": "steel-blue",
"name": "Steel Blue",
"hex": "#4682B4",
"rgb": [
70,
130,
180
],
"hsl": [
207,
44,
49
],
"cmyk": [
61,
28,
0,
29
],
"family": "blue",
"temperature": "cool",
"tone": [
"balanced"
],
"luminance": 0.2056,
"contrast": {
"black": 5.11,
"white": 4.11
},
"wcag": {
"AA": [
"#000000"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.11
},
"description": "Steel Blue is #4682B4, a cool blue color with balanced character. Compared with Tanzanite, 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/steel-blue/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/steel-blue.json"
},
{
"slug": "tanzanite",
"name": "Tanzanite",
"hex": "#4D5DAB",
"rgb": [
77,
93,
171
],
"hsl": [
230,
38,
49
],
"cmyk": [
55,
46,
0,
33
],
"family": "blue",
"temperature": "cool",
"tone": [
"balanced"
],
"luminance": 0.1235,
"contrast": {
"black": 3.47,
"white": 6.05
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": []
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 6.05
},
"description": "Tanzanite is #4D5DAB, a cool blue color with balanced character. Compared with Steel Blue, it is darker and less saturated. Use it for jewel-tone palettes, luxury branding, and premium interface accents, with white text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/tanzanite/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/tanzanite.json"
}
],
"differences": {
"rgbDistance": 38.7,
"contrastRatio": 1.47,
"hslDelta": {
"hue": 23,
"saturation": 6,
"lightness": 0
},
"luminanceDelta": 0.0821,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [
"balanced"
],
"lighterColor": "Steel Blue",
"moreSaturatedColor": "Steel Blue"
},
"accessibility": {
"pairContrastRatio": 1.47,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Steel Blue",
"background": "#4682B4",
"foreground": "#000000",
"label": "black text",
"ratio": 5.11
},
{
"color": "Tanzanite",
"background": "#4D5DAB",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 6.05
}
]
},
"useCases": {
"chooseFirstWhen": "Steel Blue is better when the design needs balanced blue character, cool temperature, and the specific HEX value #4682B4.",
"chooseSecondWhen": "Tanzanite is better when the design needs balanced blue character, cool temperature, and the specific HEX value #4D5DAB.",
"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/steel-blue-vs-tanzanite.json",
"https://www.colorsencyclopedia.com/api/colors/steel-blue.json",
"https://www.colorsencyclopedia.com/api/colors/tanzanite.json"
],
"url": "https://www.colorsencyclopedia.com/compare/steel-blue-vs-tanzanite/",
"apiUrl": "https://www.colorsencyclopedia.com/api/compare/steel-blue-vs-tanzanite.json"
}