Rekha

Thai lucky colours by day of the week

In Thailand, every day of the week has its own colour, linked to the planet that rules the day. The colour of the day you were born on is considered your personal colour, and many people choose clothes, cars and even phone cases to match lucky colours for important days.

The colours of the week

DayBirth colourPlanet
SundayRedSun
MondayYellowMoon
TuesdayPinkMars
WednesdayGreenMercury
ThursdayOrangeJupiter
FridayLight blueVenus
SaturdayPurpleSaturn

The late King Bhumibol was born on a Monday, which is why yellow is so widely worn in Thailand on his day and at royal events.

Lucky colours and colours to avoid

Thai astrologers also publish, for each weekday, colours that bring luck, money, success or love, and one colour to avoid (kalakini). Lists vary between astrologers and are updated each year, so treat any single list as one tradition among several.

Find your birth day

If you do not know which weekday you were born on, Rekha's Kundli shows it along with your Thai birth colour.

How the colours are used in daily life

Day and night Wednesday

Thai astrology splits Wednesday into day and night (after about 6 pm). People born on a Wednesday night are traditionally linked with Rahu, and their colour is often given as black or dark grey rather than green. If you were born on a Wednesday evening, check the time.

Lucky colours for each day

Thai astrologers publish yearly lists that give, for each weekday, colours for work success, money, love and protection, plus one colour to avoid. These lists differ between astrologers and change each year, so they are best treated as a fun guide. Rekha shows a simple "colour of the day" on the Today page based on the traditional weekday colours.

Finding your birth weekday

Your birth weekday depends on your local date and time of birth. Rekha's Kundli works it out from your birth details and shows your Thai birth colour alongside your Vedic and Chinese profile.

Frequently asked questions

What is the Thai colour for Monday?

Yellow, linked with the Moon.

Why is yellow important in Thailand?

It is the Monday colour, and King Bhumibol was born on a Monday.

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Updated Tuesday, 13 October 2026. For entertainment and self-reflection; traditions differ between regions and schools.