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Bastioned Bamboo

#55840a
Notes

Bastioned Bamboo (#55840A) is a deep lime 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 (83°, 86%, 28%) places it in the highly saturated band at a dark lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary indigo. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#55840a
RGB
rgb(85, 132, 10)
HSL
hsl(83, 86%, 28%)
HWB
hwb(83 4% 48%)
OKLCH
oklch(55.8% 0.148 130.5)
HSV
hsv(83, 92%, 52%)
LAB
lab(50.04% -33.47 52.06)
LCH
lch(50.04% 61.89 122.74)
CMYK
cmyk(36%, 0%, 92%, 48%)

Etymology

Bastioned
adjective

Italian bastionato, fortified-with-bastions — past-participle of bastion, derived from bastia (fortified-tower). As a color modifier, bastioned implies a saturated-and-fortified-and-projecting quality, the deep-rich color of Vauban-period military-fortress star-fort projecting-bastion stone-architecture. Sits at the bold-and-fortified end of the grid, parallel to fortified and buttressed.

Bamboo
noun

The subfamily Bambusoideae — fast-growing tropical and temperate grasses essential to East Asian architecture, scaffolding, and cuisine. Bamboo color refers to fresh bamboo culms in a Kyoto garden: a saturated, slightly cool yellow-green with the satin finish of segmented culm. Cooler than yamabuki.

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

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Harmonies

Accessibility

Color-vision simulation

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.

#55840a
Original
#8a7900
Protanopia
#84761c
Deuteranopia
#577e70
Tritanopia
#717171
Achromatopsia
WCAG contrast

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.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon White
4.48:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
4.69:1

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