From Japanese-English FreeDict Dictionary ver. 0.1:
[news1] [nf12] 朱 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, 緋 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, [news1] [nf12] あけ /ˈäke̞/, (緋) ひ /çˈi/
1. (noun (common) (futsuumeishi))
(nouns which may take the genitive case particle `no')
scarlet, red
2. (noun (common) (futsuumeishi))
朱に染まるblood
From Japanese-English FreeDict Dictionary ver. 0.1:
赤 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, 紅 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, 朱 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, (word containing out-dated kanji) 緋 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, あか /ˈäkä/
1. (noun (common) (futsuumeishi))
red, crimson, scarlet
2. red-containing colour (e.g. brown, pink, orange)
3.
Note: colloquialism (often written as アカ)
Red (i.e. communist)
4. 赤信号
Note: abbreviationred light
5. 赤字・1, 赤字・2
Note: abbreviationred ink (i.e. in finance or proof-reading), (in) the red
6. (nouns which may take the genitive case particle `no')
(noun, used as a prefix)
赤の他人complete, total, perfect, obvious
7. (赤)
(noun (common) (futsuumeishi))
銅・どう・1copper