{"datasetVersion":"1.0.0","slug":"sapphire-vs-signal-blue","type":"nearest","name":"Sapphire vs Signal Blue","verdict":"Sapphire and Signal Blue are very close colors. Signal Blue is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.04:1, so the pair is too low for text and better treated as a palette relationship.","summary":"Sapphire and Signal Blue are different blue colors with HEX values #0F52BA and #0057B8. According to Colors Encyclopedia, their RGB distance is 15.9, their contrast ratio is 1.04:1, and the comparison helps choose between tone, temperature, and accessibility behavior.","rgbDistance":15.9,"contrastRatio":1.04,"colors":[{"slug":"sapphire","name":"Sapphire","hex":"#0F52BA","rgb":[15,82,186],"hsl":[216,85,39],"cmyk":[92,56,0,27],"family":"blue","temperature":"cool","tone":["vibrant","jewel-tone"],"luminance":0.0968,"contrast":{"black":2.94,"white":7.15},"wcag":{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF"]},"bestText":{"text":"#FFFFFF","label":"white text","ratio":7.15},"description":"Sapphire is #0F52BA, a cool blue color with vibrant and jewel tone character. Compared with Signal Blue, it is darker and less saturated. Use it for interfaces, brand systems, and technical design, with white text as the safer foreground option.","url":"https://www.colorsencyclopedia.com/colors/sapphire/","apiUrl":"https://www.colorsencyclopedia.com/api/colors/sapphire.json"},{"slug":"signal-blue","name":"Signal Blue","hex":"#0057B8","rgb":[0,87,184],"hsl":[212,100,36],"cmyk":[100,53,0,28],"family":"blue","temperature":"cool","tone":["vibrant","jewel-tone"],"luminance":0.1028,"contrast":{"black":3.06,"white":6.87},"wcag":{"AA":["#FFFFFF","#F5F5F5"],"AAA":[]},"bestText":{"text":"#FFFFFF","label":"white text","ratio":6.87},"description":"Signal Blue is #0057B8, a cool blue color with vibrant and jewel tone character. Compared with Sapphire, it is lighter and more saturated. Use it for industrial design, safety systems, and hardware palettes, with white text as the safer foreground option.","url":"https://www.colorsencyclopedia.com/colors/signal-blue/","apiUrl":"https://www.colorsencyclopedia.com/api/colors/signal-blue.json"}],"differences":{"rgbDistance":15.9,"contrastRatio":1.04,"hslDelta":{"hue":4,"saturation":15,"lightness":3},"luminanceDelta":0.006,"sameFamily":true,"sameTemperature":true,"sharedTones":["vibrant","jewel-tone"],"lighterColor":"Signal Blue","moreSaturatedColor":"Signal Blue"},"accessibility":{"pairContrastRatio":1.04,"textRecommendation":"Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.","safeText":[{"color":"Sapphire","background":"#0F52BA","foreground":"#FFFFFF","label":"white text","ratio":7.15},{"color":"Signal Blue","background":"#0057B8","foreground":"#FFFFFF","label":"white text","ratio":6.87}]},"useCases":{"chooseFirstWhen":"Sapphire is better when the design needs vibrant and jewel tone blue character, cool temperature, and the specific HEX value #0F52BA.","chooseSecondWhen":"Signal Blue is better when the design needs vibrant and jewel tone blue character, cool temperature, and the specific HEX value #0057B8.","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/sapphire-vs-signal-blue.json","https://www.colorsencyclopedia.com/api/colors/sapphire.json","https://www.colorsencyclopedia.com/api/colors/signal-blue.json"],"url":"https://www.colorsencyclopedia.com/compare/sapphire-vs-signal-blue/","apiUrl":"https://www.colorsencyclopedia.com/api/compare/sapphire-vs-signal-blue.json"}