{"datasetVersion":"1.0.0","slug":"cobalt-blue-vs-signal-blue","type":"nearest","name":"Cobalt Blue vs Signal Blue","verdict":"Cobalt Blue and Signal Blue are very close colors. Signal Blue is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.23:1, so the pair is too low for text and better treated as a palette relationship.","summary":"Cobalt Blue and Signal Blue are different blue colors with HEX values #0047AB and #0057B8. According to Colors Encyclopedia, their RGB distance is 20.6, their contrast ratio is 1.23:1, and the comparison helps choose between tone, temperature, and accessibility behavior.","rgbDistance":20.6,"contrastRatio":1.23,"colors":[{"slug":"cobalt-blue","name":"Cobalt Blue","hex":"#0047AB","rgb":[0,71,171],"hsl":[215,100,34],"cmyk":[100,58,0,33],"family":"blue","temperature":"cool","tone":["jewel-tone"],"luminance":0.0745,"contrast":{"black":2.49,"white":8.43},"wcag":{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]},"bestText":{"text":"#FFFFFF","label":"white text","ratio":8.43},"description":"Cobalt Blue is #0047AB, a cool blue color with jewel tone character. Compared with Signal Blue, it is darker and similar in saturation. Use it for interfaces, brand systems, and technical design, with white text as the safer foreground option.","url":"https://www.colorsencyclopedia.com/colors/cobalt-blue/","apiUrl":"https://www.colorsencyclopedia.com/api/colors/cobalt-blue.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 Cobalt Blue, it is lighter and similar in saturation. 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":20.6,"contrastRatio":1.23,"hslDelta":{"hue":3,"saturation":0,"lightness":2},"luminanceDelta":0.0283,"sameFamily":true,"sameTemperature":true,"sharedTones":["jewel-tone"],"lighterColor":"Signal Blue","moreSaturatedColor":"Cobalt Blue"},"accessibility":{"pairContrastRatio":1.23,"textRecommendation":"Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.","safeText":[{"color":"Cobalt Blue","background":"#0047AB","foreground":"#FFFFFF","label":"white text","ratio":8.43},{"color":"Signal Blue","background":"#0057B8","foreground":"#FFFFFF","label":"white text","ratio":6.87}]},"useCases":{"chooseFirstWhen":"Cobalt Blue is better when the design needs jewel tone blue character, cool temperature, and the specific HEX value #0047AB.","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/cobalt-blue-vs-signal-blue.json","https://www.colorsencyclopedia.com/api/colors/cobalt-blue.json","https://www.colorsencyclopedia.com/api/colors/signal-blue.json"],"url":"https://www.colorsencyclopedia.com/compare/cobalt-blue-vs-signal-blue/","apiUrl":"https://www.colorsencyclopedia.com/api/compare/cobalt-blue-vs-signal-blue.json"}