Basic colors.

• أَحْمَرʾaḥmarred (masculine)
• أَزْرَقʾazraqblue (masculine)
• أَخْضَرʾakhḍargreen (masculine)
• أَصْفَرʾaṣfaryellow (masculine)
• أَسْوَدʾaswadblack (masculine)
• أَبْيَضʾabyaḍwhite (masculine)
• بُرْتُقَالِيّburtuqāliyyorange (from burtuqāl, orange fruit; nisba adjective)
• بُنِّيّbunniyybrown (from bunn, coffee beans; nisba adjective)
• وَرْدِيّwardiyypink (from ward, roses; nisba adjective)
• رَمَادِيّramādiyygrey (from ramād, ashes; nisba adjective)
• بَنَفْسَجِيّbanafsajiyypurple / violet (from banafsaj, violet flower; nisba adjective)
• لَوْنlawncolor (the noun itself; plural: alwān)
• مَا لَوْنُهُ؟mā lawnuhu?what color is it? — e.g. ما لون السماء؟ = What color is the sky?
• السَّمَاءُ زَرْقَاءُas-samāʾu zarqāʾuthe sky is blue (note: feminine color form zarqāʾ used with the feminine noun samāʾ)