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Buttressed Boboli

#17651b
Notes

Buttressed Boboli (#17651B) is a deep green 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 (123°, 63%, 24%) 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 violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#17651b
RGB
rgb(23, 101, 27)
HSL
hsl(123, 63%, 24%)
HWB
hwb(123 9% 60%)
OKLCH
oklch(44.5% 0.131 143.6)
HSV
hsv(123, 77%, 40%)
LAB
lab(37.06% -38.82 33.81)
LCH
lch(37.06% 51.48 138.94)
CMYK
cmyk(77%, 0%, 73%, 60%)

Etymology

Buttressed
adjective

Old French bouterez, thrusting-mass — past-participle of buttress, derived from bouter (to thrust). As a color modifier, buttressed implies a saturated-and-architecturally-supported quality, the deep-rich color of Gothic-Cathedral flying-buttress-and-rib-vault stone-architecture. Sits at the bold-and-fortified end of the grid, parallel to fortified and reinforced.

Boboli
noun

The Florentine palace gardens behind Palazzo Pitti — and the saturated green of Boboli's Anfiteatro and Viottolone cypress-lined avenues. Boboli refers to a Boboli cypress avenue at midday: a deep, slightly cool dark green with the matte finish of mature Cupressus sempervirens foliage.

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.

#17651b
Original
#675b10
Protanopia
#5e5522
Deuteranopia
#006256
Tritanopia
#4f4f4f
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).
AAAon White
7.21:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.91:1

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