Colors in Thai: Complete Vocabulary + The Day-Color System

Learning colors is one of the more relaxed steps in Thai vocabulary — but in Thailand, colors carry an extra layer of meaning. They're connected to days of the week, astrology, and social symbolism. Once you know which color belongs to which day, you understand why Thais sometimes dress very deliberately.

Basic Colors in Thai

In Thai, colors are always preceded by สี (sǐi, rising tone) — the word for "color." So "red" isn't just แดง (dɛɛng), it's สีแดง (sǐi dɛɛng). In conversation, สี is sometimes dropped when context is clear.

Thailand's Day-Color System

In Thai culture, each day of the week has its own lucky color, derived from the astrological planet that 'rules' that day. Thais sometimes wear the color of the day consciously — it's considered auspicious:

• Monday (วันจันทร์): yellow (สีเหลือง) — color of the moon.

• Tuesday (วันอังคาร): pink (สีชมพู) — linked to Mars in Thai astrological tradition.

• Wednesday (วันพุธ): green (สีเขียว) — color of Mercury.

• Thursday (วันพฤหัสบดี): orange (สีส้ม) — linked to Jupiter and associated with monks.

• Friday (วันศุกร์): light blue (สีฟ้า) — color of Venus.

• Saturday (วันเสาร์): purple (สีม่วง) — linked to Saturn.

• Sunday (วันอาทิตย์): red (สีแดง) — color of the sun.

Find more colors and their usage in the Thai dictionary. Or practice them in the daily challenge.