blue40

Blue40 is a term encountered in various contexts related to blue color variants, but it does not have a single universal definition. In color naming and design systems, “blue40” is typically a shorthand used to designate a specific shade within a blue family. The exact hue, saturation, and lightness of blue40 depend on the particular palette or token set being referenced, so its appearance can vary between projects or brands.

In design tokens and UI frameworks, blue40 often appears as a token name or variable that maps to a concrete color value (such as a hex or RGB value) within a broader blue scale. Designers use such tokens to maintain visual consistency across interfaces, with the numeric suffix indicating its position in the scale. Because the mapping is project-specific, blue40 in one system may look different from blue40 in another.

Outside technical color systems, Blue40 may appear as a product name, model designation, or brand identifier that has little or no direct relation to its color. In these cases, the term is primarily a nominal label chosen for branding or inventory purposes.

When encountering the term, the most reliable approach is to consult the relevant design guidelines, style guide, or token catalog for the specific project or context. Without that reference, blue40 remains an ambiguous label, conveying a blue shade concept but not a fixed specification.