Croft Tuff
Croft Tuff (#0F0C39) is a deep blue with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (244°, 65%, 14%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. For a confident two-color system, pair it with its complementary yellow. For something softer, pull in its analogous neighbors on either side of the wheel.
Etymology
Old English croft, small-enclosed-field — adjectival usage of croft. As a color modifier, croft implies a neutral-and-Scottish-Highland-and-traditional quality, the neutral color of Scottish-Highland-Crofter hand-spun-and-hand-woven crofting-and-pasture traditional-craft textile-finish. Sits at the neutral-and-traditional end of the grid, parallel to homespun and folksy in usage.
Italian tufo, porous-stone — the deep-cool-gray volcanic-ash-and-pumice cemented-rock of Cappadocian and Roman-Volsinian monolithic-architecture quarries. Tuff color refers to a Cappadocian Göreme tuff cliff-cave face in midday sun: a dark cool-gray with the matte finish of welded-and-non-welded pyroclastic flow deposit on hand-carved early-Christian rock-cut church.
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
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.