Some Basic colour correspondencies, for use in candle magic for example:

Red - Passion, courage, strength, purpose, vitality, health, male sexuality, sex

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Orange - Ambition, confidence, success in career or material concerns, money, creativity, well-being, strength (but gentler than Red)

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Yellow - Intellectual or mental work, communications, study, exams.

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Green - Prosperity, healing, fertility, nature, growth (light colours work quickly but less result, darker ones more slowly but stronger result)

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Blue - Light blues - Peace and tranquillity

Darker Blues - Meditation and spiritual understanding

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Purple - Travel, writing, learning, wisdom, spiritual growth and understanding, power, ambition. (paler shades are useful for aiding meditation)

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Pink Female sexuality, Lighter colours for Love, Friendship, harmony, well-being. Darker Pinks for passion.

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Brown Earth Energy, stability, grounding material goals into reality.

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Gold - Money, prosperity, wealth, enjoyment, luxury, the Sun

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Silver - Purity, tranquillity, detachment, purification, protection, psychic and clairvoyance, the Moon

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White - A universal colour can be used for any other colour, Purification, protection, peace, spirituality, The Moon

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Black - Banishing, releasing, to absorb negativity, grounding and centering, the waning and dark moon.