Stoical Yúdùhuī
Stoical Yúdùhuī (#9FB0A5) is a true green 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 (141°, 10%, 66%) 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 magenta. For something softer, pull in its analogous neighbors on either side of the wheel.
Etymology
Greek stōikós, of-the-Stoa — adjectival suffix -al. As a color modifier, stoical implies a neutral-and-restrained-and-unaffected quality, the neutral color of Stoic-philosophical and Spartan-school unaffected-and-stripped-down formal-but-unaffected color-decision. Sits at the neutral-and-restrained end of the grid, parallel to stoic and reserved in usage.
Chinese 鱼肚灰, fish-belly-gray — the formal Chinese color name for the pale-cream-gray of fish-belly skin tone, used in Song-dynasty yùhú (jade-and-pearl) literati-painting. Yúdùhuī color refers to a Song-dynasty fish-painting belly-tone in a Bāzhāi ink-painting: a pale cool gray with the matte finish of multi-bath ink-and-water dilution on hand-finished xuān-paper.
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.