Colors and social connections inspire some of the most visual idioms in English. When you call a situation a "grey area" or say two people "get along like a house on fire," you are using language that paints a picture far more vividly than any literal description could. This guide covers 10 color idioms and 10 relationship idioms drawn from the English Idioms: Complete Guide, complete with meanings and example sentences you can use right away.
Whether you want to describe a financial situation, express your feelings about a friendship, or navigate a tricky social interaction, the idioms in this article will help you sound natural and confident in English.
Color Idioms in English
Colors appear constantly in idiomatic English. These expressions use color symbolism to describe emotions, situations, and outcomes in memorable ways.
"Once in a blue moon" — This expression means something happens very rarely. Example: "I only check social media once in a blue moon these days."
(This idiom also appears in Everyday English Idioms under common daily expressions.)
"Caught red-handed" — This expression means someone is caught in the act of doing something wrong. Example: "The student was caught red-handed copying answers during the exam."
"Tickled pink" — This expression means very pleased or delighted. Example: "She was tickled pink when her host family surprised her with a birthday cake."
(This idiom also appears in Everyday English Idioms under emotion expressions.)
"White lie" — This expression refers to a small, harmless lie told to avoid hurting someone's feelings. Example: "I told a white lie and said I liked the food, even though it was too spicy for me."
"In the red" — This expression means losing money or being in debt. Example: "The restaurant has been in the red since the renovation cost more than expected."
"In the black" — This expression means financially profitable. Example: "After 6 months of hard work, the small business is finally in the black."
"Golden opportunity" — This expression means a perfect or rare chance to do something important. Example: "Studying abroad is a golden opportunity to improve your English and experience a new culture."
"Grey area" — This expression describes a situation that is unclear, ambiguous, or not covered by existing rules. Example: "Whether casual remote work counts as a business trip is still a grey area in our company policy."
"Paint the town red" — This expression means to go out and celebrate in a lively way. Example: "After passing her final exam, she and her classmates went out to paint the town red."
"With flying colors" — This expression means to succeed or complete something with great success. Example: "He passed the language proficiency test with flying colors after 3 months of intensive study."
Relationship and Social Idioms in English
Social life gives English some of its most colorful idioms. These expressions describe everything from fast friendships to lasting conflicts — and the many shades of human connection in between.
"Birds of a feather flock together" — This expression means people with similar interests or personalities tend to become friends. Example: "Those 2 are always together. Birds of a feather flock together."
"Get along like a house on fire" — This expression means to become friends very quickly and easily. Example: "My new roommate and I get along like a house on fire — we have so much in common."
"Two peas in a pod" — This expression means 2 people are very similar to each other. Example: "Those twins think alike and dress alike — they're two peas in a pod."
"Rub someone the wrong way" — This expression means to annoy or irritate someone, often unintentionally. Example: "His blunt comments rub some people the wrong way, but he means well."
"Break the mold" — This expression means to do something in a completely original or unexpected way. Example: "CWC's English Speaking Success program breaks the mold by dedicating 80 minutes daily to speaking practice — something most ESL schools never do."
"Bury the hatchet" — This expression means to end a conflict and make peace with someone. Example: "After months of disagreement, the 2 classmates finally buried the hatchet over coffee."
"Take someone under your wing" — This expression means to mentor or guide someone who is less experienced. Example: "The senior student took the new arrival under her wing and helped her get settled in Los Angeles."
"Stab someone in the back" — This expression means to betray someone who trusted you. Example: "He felt stabbed in the back when his friend shared the personal story without permission."
"Give the benefit of the doubt" — This expression means to trust someone despite uncertainty or incomplete information. Example: "It was her first week at the company, so her manager gave her the benefit of the doubt on the small mistake."
"Bend over backwards" — This expression means to make a very large effort to help someone. Example: "The school staff bent over backwards to make the new international students feel welcome."
How Social Idioms Come Alive Outside the Classroom
Learning idioms from a list is useful. Using them with real people is where the fluency actually happens. CWC's approach to language learning recognizes this directly. Students from France, Italy, Spain, Brazil, Japan, Thailand, South Korea, Russia, and more than 15 other countries share classroom space and shared experiences. A recent LA Kings hockey evening at Crypto.com Arena had students navigating English while discussing the game, finding their seats, and cheering together — the kind of spontaneous interaction where expressions like "birds of a feather" and "bend over backwards" move from a textbook entry to a natural phrase you reach for without thinking. CWC also organizes visits to MOCA (The Museum of Contemporary Art) and The Last Bookstore, turning the city into an extension of the curriculum. Even a casual mini golf night with classmates from 6 different countries becomes a space where social idioms get real, repeated practice. These activities are not optional add-ons — they are built into the educational model.
Want to use social idioms the way native speakers do? At Columbia West College (CWC) in Los Angeles, students from 20+ countries practice expressions like these in daily 80-minute speaking sessions — 6 times more speaking practice than a typical ESL class. Native English-speaking Teaching Assistants correct idiom misuse in real time, so you build natural habits from day one. Learn more about CWC's ESS program.
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FAQ
Why do so many English idioms use color words?
Colors carry strong emotional and cultural associations in English. Red is associated with danger, passion, or heat — which is why "caught red-handed" implies guilt and "paint the town red" suggests excitement. Blue traditionally signals sadness or rarity, as in "feeling blue" or "once in a blue moon." Gold represents value and excellence, giving us "golden opportunity." These color associations developed over centuries of English literature, folklore, and everyday life, and they became fixed into idiomatic phrases that native speakers now use automatically.
How can I remember relationship idioms more easily?
The most effective method is to connect the idiom to a real experience or person. "Get along like a house on fire" is much easier to remember if you think of a specific friendship where you connected instantly. "Bury the hatchet" sticks better when you associate it with a real conflict that was resolved. Another strategy is to use the idioms when speaking, not just when studying. Try to use 1 or 2 new relationship idioms each week in real conversations and notice how quickly they become part of your natural vocabulary.
Building real relationships starts before you enroll. CWC's international student advisors speak your language — literally. Multilingual advisors cover French, Italian, Spanish, Portuguese, Japanese, Thai, Korean, and more, so you can get support in your native language from day one. When you reach out to CWC, you are already taking the first step toward a community where belonging and language growth go hand in hand. Contact CWC today.
