{"datasetVersion":"1.0.0","slug":"tanzanite-vs-iolite","type":"nearest","name":"Tanzanite vs Iolite","verdict":"Tanzanite and Iolite are visually related colors. Tanzanite is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.22:1, so the pair is too low for text and better treated as a palette relationship.","summary":"Tanzanite and Iolite are different blue colors with HEX values #4D5DAB and #5A4C8D. According to Colors Encyclopedia, their RGB distance is 36.9, their contrast ratio is 1.22:1, and the comparison helps choose between tone, temperature, and accessibility behavior.","rgbDistance":36.9,"contrastRatio":1.22,"colors":[{"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 Iolite, it is lighter and more 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"},{"slug":"iolite","name":"Iolite","hex":"#5A4C8D","rgb":[90,76,141],"hsl":[253,30,43],"cmyk":[36,46,0,45],"family":"blue","temperature":"cool","tone":["balanced"],"luminance":0.0927,"contrast":{"black":2.85,"white":7.36},"wcag":{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF"]},"bestText":{"text":"#FFFFFF","label":"white text","ratio":7.36},"description":"Iolite is #5A4C8D, a cool blue color with balanced character. Compared with Tanzanite, 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/iolite/","apiUrl":"https://www.colorsencyclopedia.com/api/colors/iolite.json"}],"differences":{"rgbDistance":36.9,"contrastRatio":1.22,"hslDelta":{"hue":23,"saturation":8,"lightness":6},"luminanceDelta":0.0308,"sameFamily":true,"sameTemperature":true,"sharedTones":["balanced"],"lighterColor":"Tanzanite","moreSaturatedColor":"Tanzanite"},"accessibility":{"pairContrastRatio":1.22,"textRecommendation":"Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.","safeText":[{"color":"Tanzanite","background":"#4D5DAB","foreground":"#FFFFFF","label":"white text","ratio":6.05},{"color":"Iolite","background":"#5A4C8D","foreground":"#FFFFFF","label":"white text","ratio":7.36}]},"useCases":{"chooseFirstWhen":"Tanzanite is better when the design needs balanced blue character, cool temperature, and the specific HEX value #4D5DAB.","chooseSecondWhen":"Iolite is better when the design needs balanced blue character, cool temperature, and the specific HEX value #5A4C8D.","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/tanzanite-vs-iolite.json","https://www.colorsencyclopedia.com/api/colors/tanzanite.json","https://www.colorsencyclopedia.com/api/colors/iolite.json"],"url":"https://www.colorsencyclopedia.com/compare/tanzanite-vs-iolite/","apiUrl":"https://www.colorsencyclopedia.com/api/compare/tanzanite-vs-iolite.json"}