The
choice of the right lighting in the house's projects goes far beyond aesthetics. The
color temperature of a lamp directly influences the
atmosphere, visual comfort, and even the performance of activities. Among the most common options,
white light and yellow light serve distinct roles in decoration and in the
functionality of the spaces.
Natália Xavier - Ciclos do Agora. Projeto da CASACOR São Paulo 2025. (Denilson Machado, do MCA Estúdio/CASACOR)
While white light is associated with
concentration and clarity, yellow light refers to
relaxation and comfort. Knowing when to use each one (or combining them strategically!) helps to enhance the architecture, highlight materials, and create atmospheres aligned with the uses of each project in the house.
Cintia Ramos - Office Verbo e Silêncio. Projeto da CASACOR Paraná 2025. (Emy Tsutsumi/CASACOR)
How color temperature works in lighting
Before deciding between white or yellow light, it is important to understand what differentiates one from the other. The color temperature (measured in Kelvin - K) indicates the
tone emitted by the lamp. The lower the temperature, the warmer and yellower the light will be. The higher it is, the cooler and whiter. Therefore, this grading directly affects the
visual perception and the use of projects.
- Yellow light: between 2700K and 3000K
- Neutral white light: around 4000K
- Cool white light: between 5000K and 6500K
Where to use white light:
White light is often recommended for
projects that require focus, attention, and clear visibility. Its cooler tone conveys a
sense of cleanliness, making it very useful in work and service areas.
Kitchens and service areas
The
sharpness of white light favors food preparation and makes it easy to see dirt or residue. In
service areas, it also ensures visibility in everyday tasks like washing clothes or organizing items.
Verónica Paz - Loft Esencia. Neste ambiente, cada elemento foi cuidadosamente escolhido para criar um ambiente que inspira introspecção. Os tons suaves e envolventes, juntamente com texturas que evocam materiais naturais, geram uma atmosfera de serenidade. Verónica Paz concebeu este projeto como um refúgio íntimo e poderoso, onde as paredes texturizadas, as esculturas com narrativas próprias e a presença de plantas aludem ao crescimento interior e aos sonhos que ainda não floresceram. É um lugar para habitar e também uma experiência que honra a resiliência humana, com ênfase na força das mulheres. (Alvaro Mier/CASACOR)
Offices and study spaces
Projects focused on
productivity benefit from white light as it stimulates concentration and reduces eye strain. It is a common choice for
home offices, study desks, and residential libraries.
Home Office, projeto de Felipe Félix para a CASACOR Goiás 2021 (Edgard César/CASACOR)
Bathrooms
Depending on the style of the project, white light can be useful in bathrooms — especially in the
mirror area — as it ensures
color fidelity, facilitating tasks like makeup or shaving.
Vanessa Figueiredo e Giovanna Arimatéa - Banho do Casal. Projeto da CASACOR Goiás 2025. (Edgard César/CASACOR)
Where to use yellow light:
With a warmer and more welcoming tone, yellow light contributes to creating a
warm and relaxing atmosphere. It is usually recommended for rest or socializing areas.
Living rooms
The sense of coziness conveyed by yellow light reinforces the
informal and inviting use of the living room. It enhances
natural materials, such as wood and fibers, and can be used in decorative lamps, table lamps, and pendants.
Dado Castello Branco Arquitetura - Living do Colecionador. O arquiteto Guilherme Castello Branco entabulou uma parceria com o pai, Dado, na concepção deste living com vista para o parque. O projeto faz valer suas dimensões generosas: são 103 m², quase 5 m de pé-direito, grandes janelas e dois espaços de estar, além de uma copa com bar. Como peça-chave para abrigar o acervo de um colecionador, a estante de madeira se estende até o teto, onde há outro refinamento: o forro abaulado, iluminado em todo o perímetro para ressaltar a superfície arredondada. Na área de servir, a marcenaria exibe lajotas cerâmicas inseridas em sua estrutura. (Juliano Colodeti, do MCA Estúdio/CASACOR)
Bedrooms
The use of yellow light in bedrooms facilitates the
transition of the body to rest, helping to signal the end of the day. Therefore, it is common for the project to combine main lighting with softer and
indirect sources.
Cinthya Arana - Estudio de Inspiración. Projeto da CASACOR Peru 2025. (Marcel Suumoond/CASACOR)
Dinners and socializing areas
In dining rooms or integrated balconies, yellow light creates a
more engaging atmosphere. When used with a
dimmer, it allows intensity adjustments to suit the occasion.
Sala de Jantar - Ananda Mella. Pura elegância. O ambiente é acolhedor e elegante, com a madeira revestindo paredes e teto, além do painel de tecido com textura de couro. O jardim vertical assume a outra parede, cheio de frescor. Ao centro, duas mesas de jantar unidas oferecem 12 lugares, com um aparador em pedra entre elas. Luminárias em forma de dutos equilibram o visual. O quadro é do fotógrafo Ricardo Valêncio. (MCA Estúdio/CASACOR)
Possible combinations and mixed lighting
In many cases, the most efficient lighting project alternates or combines the two color temperatures. This allows for
adapting the use of lighting to the time of day, the function of the space, and even the mood of the residents.
Aclaene de Mello Arquitetura - Sala de Estar e Jantar. Projeto da CASACOR Rio Grande do Sul 2025. (Cristiano Bauce/CASACOR)
Layers of light
The use of
different sources (such as direct, indirect, and spotlight) is a way to integrate white and yellow light in the same project. For example, in a kitchen integrated with the living room, white light can be over the counters, while pendants with yellow light create a warmer atmosphere over the table.
Lamps with temperature adjustment
Smart bulbs or temperature-controlled lamps allow switching between cold and warm light with the use of apps or switches with specific functions. This
expands the flexibility of lighting, adapting to different uses throughout the day.
Strategic fixtures, table lamps, and sconces
Another effective way to apply mixed lighting is to combine direct white light for
specific activities, such as reading or food preparation, with indirect yellow light, coming from table lamps, sconces, or built-in LED strips. This layering creates a
balance between functionality and coziness, allowing the project to adapt to different uses throughout the day.
Ateliê do Tempo - Isis Dallarmi. Um manifesto de resistência à padronização, o Ateliê do Tempo, com 28 m², é o refúgio de uma caçadora de tendências que transita entre passado, presente e futuro. Inspirado pela música Delilah, de Florence and the Machine, e por Daisy Jones do livro e série homônimos: Daisy Jones and the Six, o home office mescla estilos boho, vintage e maximalista, convidando à autenticidade. "Cada cantinho deste ateliê resgata uma história única, instigando-nos a viver com coragem e paixão", declara a arquiteta. Nele, o tempo cede lugar à liberdade criativa e à celebração pessoal. (Edgard César/CASACOR)
This text was created with the support of CASACOR Publisher, a unique content creation agent, developed by the CASACOR Technology team based on the knowledge base of casacor.com.br. This text was edited by Yeska Coelho. 
