According to the science of candle magic, specific candles may be used on specific days of the week, since these colors are also associated with the different Planets. Thus:
Sunday– Gold or yellow candles
Monday– Silver, Grey or White
Saturday– Black or Purple
What do different candle colors mean?
Here are the meanings of different candle colors in general:
White candles-Destruction of negative energy, peace, truth and purity
Purple candles- Spiritual awareness, wisdom, tranquility
Lavender Candles– Intuition, Paranormal, Peace, Healing
Blue and Deep Blue Candles– Meditation, Healing, Forgiveness, Inspiration, Fidelity, Happiness, and opening lines of Communication.
Green Candles– Money, Fertility, Luck, Abundance, Health (not to be used when diagnosed with Cancer), Success
Rose and Pink Colored Candles– Positive self love, friendship, harmony, joy
Yellow Candles- Realizing and manifesting thoughts, confidence, bringing plans into action, creativity, intelligence, mental clarity, clairvoyance.
Orange Candles– Joy, energy, education, strength attraction, stimulation
Red or Deep red Candles– Passion, energy, love, lust, relationships, sex, vitality, courage.
Black Candles– Protection, absorption and destruction of negative energy and also repelling negative energy from others
Silver candle– Goddess or feminine energy, remove negativity, psychic development
Gold candle– Male energy, Solar energy, fortune, spiritual attainment
Source: Color Meanings