【實用生產應用app】LRV Guru|最夯免費app-綠色工廠好玩App

LRV Guru™ app can be used alone to calculate known LRV value differences --OR-- it can be integrated with Variable, Inc. Node+Chroma, a hand-held colorimeter to measure LRV.WHAT: The LRV Guru app assists with calculating color contrast ratios. It does the math for you. Scan samples with a NODE+Chroma or enter manufacturer LRV data. LRV is an acronym that stands for Light Reflectance Value. LRV is a measurement that tells you how much light a color reflects and conversely how much it absorbs. LRV runs on a scale from 0% black to 100% white. WHO: Color consultants, architects, graphic designers, sign makers, lighting and interior designers use LRV data in several stages of color design and planning. Homeowners can use LRV as a benchmark as they choose colors because LRV provides a reference as to how light or dark a color could look and feel. WHERE: Careful planning for proper visual ergonomics is paramount in color design for the built environment. A few examples are doorways, walkways, ramps, steps, signage, and work surfaces. WHY: Meeting LRV specifications is critical to maintain the integrity of exterior architectural elements like doors and vinyl siding. In addition, guidelines for LRV contrast ratios exist in many industries and are intended to ensure good visual ergonomics for everyone especially the visually impaired. HOW: There is a standard mathematical formula predicated on LRV data points that has been used for decades to calculate the color contrast ratio between two colors. The LRV Guru app performs that calculation for you. Enter known manufacturer LRV data points if you have them or use the NODE+Chroma to scan swatches of colors. LRV Guru's default contrast ratio is set at 70% because it is the most commonly applied guideline. A significant bonus feature of the app is that the contrast ratio can be adjusted by tapping "settings" and positioning the slide bar as desired.