'''Nila''' ({{lang-en|indigo}}) punika wantah [[warna]] ring [[spekterum]] [[lantang gelombang]] nyané antuk 450 lanmiwah 420 [[nanométer]], magenah ring [[pelung]] lanmiwah [[violet]].
Ring [[basa Inggris]] ''indigo'' mawit saking [[tetanduran]] ring [[genus]] ''[[Indigofera]]'' (kautama [[tarum]], ''I. tinctoria'') sané keanggén dados pewarna kuaca.
Carik 15:
==Kekadosang warna spekterum==
[[Berkas:Newton's colour circle.png|jmpl|Nila sinunggil warna saking warna-warna ring roda warna (''[[color wheel]]'') olih [[Isaac Newton]].]]
Akeh pustaka modern magenahang nila ring spekterum sunar ring 450 lanmiwah 420 nanométer,<ref name="Huris">[http://www.huris.com/web/cog/sci/phs/phy/emr.htm Huris Group—Spectrum of Electromagnetic Radiation:]</ref><ref name="VIBGYOR">[http://www.mathworks.com/matlabcentral/fileexchange/20718-vibgyor-color-segmentation/content/VIBGYORsegmentation.m MathWorks—VIBGYOR segmentation:]</ref><ref name="EoF">[http://books.google.com/books?id=HQWNJyRV6kMC&pg=PA189&lpg=PA189&dq=%22Indigo%22+%2B+%22450-420%22&source=bl&ots=JkG53Vyw3M&sig=R89XqDWfLHm36tFyICFhI1qlG1Q&hl=en&sa=X&ei=nI26UYj6NuWwygHH-4EI&ved=0CBgQ6AEwADgK#v=onepage&q=%22Indigo%22%20%2B%20%22450-420%22&f=false Encyclopedia of Physics—Google Book Result:]</ref> sané magenah ring sisi gelombang bawak saking warna [[pelung]], ka warna spekterum [[tangi]]. Sakéwanten, warna sané kakaryaning olih pewarna puniki kantun kadebatang. Ahli ilmu optikal Hardy lanmiwah Perrin magenahang nila ring lis antara lantang gelombang 446 lanmiwah 464 nm,<ref>Arthur C. Hardy and Fred H. Perrin. ''[http://apps.isiknowledge.com/full_record.do?product=UA&search_mode=GeneralSearch&qid=22&SID=2EdCK2KejLbni4FJpgB&page=1&doc=1&colname=BIOSIS The Principles of Optics.]'' McGraw-Hill Book Co., Inc., New York. 1932.</ref>
