Decorously Nezumi
Decorously Nezumi (#757C74) is a balanced neutral with a mono character. It's a grayscale value, at home in typography, dividers, and the structural layer beneath stronger colors. Its HSL profile (113°, 3%, 47%) places it in the muted band at a mid lightness. It works well as secondary text, borders, and placeholder states. A reliable middle gray that reads cleanly in either light or dark contexts. Pair it with almost any saturated accent. It's built to sit underneath or behind stronger colors without fighting them.
Etymology
Latin decōrōsus, seemly / proper — adverbial-and-adjectival suffix -ly. As a color modifier, decorously implies a neutral-and-formal-and-proper quality where the hue carries the visual register of Edwardian-and-Victorian propriety-and-decorum-respecting coordinated formal-color-decision. Sits at the neutral-and-traditional end of the grid, parallel to properly and appropriately in usage.
Japanese 鼠, mouse — the Edo-period color tradition's umbrella term for the iconic Japanese family of mouse-grays derived from kachi-iro vat-blue and charcoal-and-iron-mordant overdyes on commoner cotton. Nezumi color refers to a samurai-class everyday-cotton nezumi-iro lined kimono: a balanced cool gray with the matte finish of multi-bath fermentation-dye-and-iron-mordant overdye on hand-spun Japanese cotton.
Closest matches
The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.
Variations
Click any swatch to exploreHarmonies
This color has effectively no chroma (OKLCH C = 0.015) — it’s on the grayscale axis. Hue rotations don’t change a grayscale color, so complementary, analogous, triadic, and split-complementary all reduce to the same value. They aren’t shown because four identical tiles would be misleading.
Accessibility
How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.
The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.
Wide gamut
The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.
This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.