{"datasetVersion":"1.0.0","slug":"royal-blue-vs-slate-blue","type":"nearest","name":"Royal Blue vs Slate Blue","verdict":"Royal Blue and Slate Blue are visually related colors. Royal Blue is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.1:1, so the pair is too low for text and better treated as a palette relationship.","summary":"Royal Blue and Slate Blue are different blue colors with HEX values #4169E1 and #6A5ACD. According to Colors Encyclopedia, their RGB distance is 48, their contrast ratio is 1.1:1, and the comparison helps choose between tone, temperature, and accessibility behavior.","rgbDistance":48,"contrastRatio":1.1,"colors":[{"slug":"royal-blue","name":"Royal Blue","hex":"#4169E1","rgb":[65,105,225],"hsl":[225,73,57],"cmyk":[71,53,0,12],"family":"blue","temperature":"cool","tone":["vibrant"],"luminance":0.1666,"contrast":{"black":4.33,"white":4.85},"wcag":{"AA":["#FFFFFF"],"AAA":[]},"bestText":{"text":"#FFFFFF","label":"white text","ratio":4.85},"description":"Royal Blue is #4169E1, a cool blue color with vibrant character. Compared with Slate Blue, it is lighter and more 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/royal-blue/","apiUrl":"https://www.colorsencyclopedia.com/api/colors/royal-blue.json"},{"slug":"slate-blue","name":"Slate Blue","hex":"#6A5ACD","rgb":[106,90,205],"hsl":[248,53,58],"cmyk":[48,56,0,20],"family":"blue","temperature":"cool","tone":["balanced"],"luminance":0.1478,"contrast":{"black":3.96,"white":5.31},"wcag":{"AA":["#FFFFFF","#F5F5F5"],"AAA":[]},"bestText":{"text":"#FFFFFF","label":"white text","ratio":5.31},"description":"Slate Blue is #6A5ACD, a cool blue color with balanced character. Compared with Royal Blue, it is darker 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/slate-blue/","apiUrl":"https://www.colorsencyclopedia.com/api/colors/slate-blue.json"}],"differences":{"rgbDistance":48,"contrastRatio":1.1,"hslDelta":{"hue":23,"saturation":20,"lightness":1},"luminanceDelta":0.0188,"sameFamily":true,"sameTemperature":true,"sharedTones":[],"lighterColor":"Royal Blue","moreSaturatedColor":"Royal Blue"},"accessibility":{"pairContrastRatio":1.1,"textRecommendation":"Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.","safeText":[{"color":"Royal Blue","background":"#4169E1","foreground":"#FFFFFF","label":"white text","ratio":4.85},{"color":"Slate Blue","background":"#6A5ACD","foreground":"#FFFFFF","label":"white text","ratio":5.31}]},"useCases":{"chooseFirstWhen":"Royal Blue is better when the design needs vibrant blue character, cool temperature, and the specific HEX value #4169E1.","chooseSecondWhen":"Slate Blue is better when the design needs balanced blue character, cool temperature, and the specific HEX value #6A5ACD.","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/royal-blue-vs-slate-blue.json","https://www.colorsencyclopedia.com/api/colors/royal-blue.json","https://www.colorsencyclopedia.com/api/colors/slate-blue.json"],"url":"https://www.colorsencyclopedia.com/compare/royal-blue-vs-slate-blue/","apiUrl":"https://www.colorsencyclopedia.com/api/compare/royal-blue-vs-slate-blue.json"}