Convivial Jet
Convivial Jet (#100A25) is a deep indigo with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (253°, 57%, 9%) 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
Latin convīviālis, of-the-banquet — adjectival suffix -al. As a color modifier, convivial implies a neutral-and-festive-and-friendly quality, the neutral color of medieval-and-Renaissance-banquet-hall festive-and-cordial-and-friendly hospitable-host interior-decoration-and-textile coordinated-color tone. Sits at the neutral-and-friendly end of the grid, parallel to cordial and gracious in usage.
Fossilized wood from the Araucaria coniferous trees of the Jurassic period — compressed for 180 million years into a hard, polishable lignite. Mined principally at Whitby on the Yorkshire coast since the Bronze Age and worn as Victorian mourning jewelry after Albert's death in 1861. The color refers to a polished Whitby jet cabochon: a deep, slightly muted near-black with the satin finish of fossilized wood.
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.