Glass I by Paint & Paper Library is a whisper-light, ethereal blue—a delicate pale shade that feels clean, fresh, and serene. As the softest tone in the Glass Architectural palette (number 581), it's crisp without any cool harshness. Glass I evokes the clarity of a dewy sky or calm coastal mist; its subtle verdant-blue base brings gentleness rather than bold colour. In natural light it reads softly luminous, offering a serene, airy backdrop perfect for interiors that crave a breath of calm, refined freshness without overt blue or green intensity.While minimal in hue, Glass I has sufficient pigment strength to read clearly in corners and softer light, giving walls a sense of quiet presence. It behaves neutrally—neither warm nor cold—and harmonises beautifully with pale neutrals, soft woods, and muted accents for a timeless, atmospheric calm.Paint and Paper Library was founded more than two decades ago in London by interior designer David Oliver. Providing inspiration, colour and design ideas for decorators, architects and interior designers worldwide, they offer a distinguished palette of over 180 unique colours, made to the highest of standards in the United Kingdom. *Please note we are unable to accept returns of paint which has been tinted to your colour selection. We advise purchasing a sample pot of your chosen colour prior to purchasing larger quantities. We do not recommend choosing colours from a colour screen as screens do not accurately represent paint colours as they will appear in your home.