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Buttressed Loganberry

#ac3397
Notes

Buttressed Loganberry (#AC3397) is a true magenta with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (310°, 54%, 44%) places it in the balanced 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 green. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#ac3397
RGB
rgb(172, 51, 151)
HSL
hsl(310, 54%, 44%)
HWB
hwb(310 20% 33%)
OKLCH
oklch(53.6% 0.190 335.7)
P3
color(display-p3 0.6223 0.2367 0.5760)
HSV
hsv(310, 70%, 67%)
LAB
lab(43.32% 59.37 -28.73)
LCH
lch(43.32% 65.96 334.18)
CMYK
cmyk(0%, 70%, 12%, 33%)

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.

Loganberry
noun

Rubus × loganobaccus — a chance hybrid between Rubus ursinus (Pacific blackberry) and Rubus idaeus (raspberry) discovered in 1881 by Judge James Harvey Logan of Santa Cruz, California. Loganberry color refers to a freshly picked Rubus × loganobaccus aggregate-drupe-cluster: a saturated, slightly cool deep magenta with the matte finish of anthocyanin-rich aggregate drupelets. Slightly cooler than raspberry.

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 explore

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.

#ac3397
Original
#345b9a
Protanopia
#5d6d94
Deuteranopia
#b53b61
Tritanopia
#545454
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).
AAon White
5.72:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.67:1

Wide gamut

Display P3 representation

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.

sRGB hex
sRGB hex
##AC3397
Display P3
Display P3
color(display-p3 0.6223 0.2367 0.5760)
P3 has visible headroomOKLCH chroma 0.190

This color is chromatic enough that authoring it as P3 native (instead of clamping to sRGB) gives a perceptibly more saturated render on wide-gamut displays — modern Macs, iPhones, iPads, and most recent OLED laptops.

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