White unifies the interior, while red accents add variety and interest.
An interior can be compared to a jigsaw puzzle, where a variety of diverse elements – furniture, lights, flooring, wall treatments, soft furnishings, etc. – are combined together to form a composition. Harmony is a design principle that deals with the pleasing combination of those elements. An interior denotes harmony when all its diverse components relate to each other and to the space that contains them in an attractive, pleasing way.
While balance unifies the space through the careful arrangements of both similar and dissimilar elements, harmony relies on the selection of elements that share a common trait or characteristic (shape, colour, texture, material, pattern, etc. )
The repetition of this common characteristic gives unity to the interior and provides visual harmony. A simple way to achieve harmony, for example, is to use a monochromatic, or analogous, colour scheme; another way is to use similar textures to give a cohesive look to the space.
Don’t overdo unity, though: if you use too many elements of similar traits, you could end up with a unified interior that lacks interest – a boring composition.
To avoid this, you need to introduce variety, giving the eye a number of different shapes, colours, textures and details to look at. But don’t add too much variety just for the sake of interest: although necessary, variety carried to an extreme can result in chaos – the very opposite of harmony!
You could say that harmony in interior design is the result of a careful balance between order and disorder, between unity and variety.
Different details in the dining chairs add variety, while the common shapes and colour provide unity. On the sofa, cushions with different patterns (variety) unified by the same colours.
You can introduce variety in an interior in many ways: you could vary orientation, size, colour, detail characteristics, texture.
If you want to achieve a harmonious interior in a simple way, first you can unify the space choosing a majority of elements that share a common characteristic, then you can add a few, carefully chosen elements that have a variety of unique, individual traits (your accents).
If you have many dissimilar elements, you could balance their variety by grouping them together (e.g. different chairs arranged around a dining table), or by placing them along a common line or plane (e.g. different armchairs placed below a suspended ceiling). You can reinforce the visual unity of the arrangement with a contour along the elements (e.g. a rug).
[caption id="attachment_1687" align="alignnone" width="600" caption="Same shape (unity) but different colours (variety) add interest to these dining areas."]
The different cushions (variety) arranged together along a line read as a whole (unity).
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In the next post of the Design Basics series I’ll talk about Rhythm and its role in interior design. If you liked this article, please leave a comment, and share the link with others. To receive your free updates and make sure you don’t miss any post, subscribe to Positively Beauty here.
Thank you!
Image Source: 1 – Bolig; 2, 5 – Living Etc.; 3 – Skona Hem; 4 – AtCasa.

















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{ 13 comments }
Thanks for writing the design basics series, I’m finding it very helpful!
many thanks, beautiful stutt,
sorry correction,beautiful stuff…..
sorry I should have typed , beautiful stuff..,..
Thank you Mary and Tony!
I so love your blog for the beautiful, crisp, colourful pictures you use to represent your point Cristina and your writing style is simple, defined and practical. Without a word of a lie this would be one top notch magazine!!! The words and images have a real strawberries and cream on a summer day kind of feel. Great joie de vivre and harmony!
Thank you for your lovely words, John!! You made my day
Cristina,
I really like this series you are doing… well done. Thanks for all the time and effort you put into these so that your readers can learn more about it! Look forward to the next installment!
Laurie, thank you for letting me know you like the design basics series. I do hope that what I write can be useful to my readers, and it feels good to read all the comments and know that my work is appreciated
Christina,
Your article is beautiful! I love your pictures! Every aspect of this product shows exactly what you are trying to protray through your words. One thing that struck me while I was reading your article and looking at your lovely pictures was the red table and the red chandelier in one of your photos. You were talking about unity and it hit me that even though the form of the chandelier may be a little more delicate then the rest of the furnature, the red color helps tie it in and I loved that! I feel the concept unity gives the designer a little more flexability and I just loved how it all came together! I love your work! It is quite lovely!
McKenzie Harman
Thank you McKenzie, glad you enjoyed my post
Hi Christina,
I’m a new Interior Design student. Was getting a bit confused studying about a few of concepts of the elements and principles of design and googled a few terms. Am so glad to have discovered your blog about Design Basics. Thanks for sharing.
Hi Diana,
thanks for letting me know! Best of luck with your studies.