Acceptably Flagstone
Acceptably Flagstone (#948182) is a true red with a warm character. It leans warm, pulling light toward red, orange, and yellow. Naturally inviting, it suits editorial and hospitality contexts. Its HSL profile (357°, 8%, 54%) places it in the muted band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary cyan. For something softer, pull in its analogous neighbors on either side of the wheel.
Etymology
Latin acceptābilis, receivable — adverbial-and-adjectival suffix -ly. As a color modifier, acceptably implies a neutral-and-satisfactory-and-fitting quality where the hue carries the visual register of acceptable-and-fitting-and-satisfactory coordinated color-decision matched to its functional requirement. Sits at the neutral-and-traditional end of the grid, parallel to adequately and sufficiently in usage.
Old English flag-stān, flat-stone — the iconic cool-mid-gray flagstone paving used in pre-modern European-and-American walkways-and-courtyards, particularly the Cotswold-Limestone and Welsh-Slate tradition. Flagstone color refers to a Cotswold-Limestone country-cottage flagstone-courtyard face in raking sun: a balanced cool gray with the matte finish of Jurassic-period hand-quarried-and-hand-cut limestone-paving with multi-decade lichen-patina.
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.
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.