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Bastioned Velveteen

#a31b7a
Notes

Bastioned Velveteen (#A31B7A) is a true magenta 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 (318°, 72%, 37%) 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
#a31b7a
RGB
rgb(163, 27, 122)
HSL
hsl(318, 72%, 37%)
HWB
hwb(318 11% 36%)
OKLCH
oklch(48.9% 0.191 344.0)
P3
color(display-p3 0.5866 0.1631 0.4664)
HSV
hsv(318, 83%, 64%)
LAB
lab(37.80% 60.50 -19.65)
LCH
lch(37.80% 63.61 342.01)
CMYK
cmyk(0%, 83%, 25%, 36%)

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.

Velveteen
noun

Velveteen — a cotton-pile imitation of silk velvet developed in late-Victorian England (c. 1880s), often dyed in deep-magenta synthetic fuchsine for women's day-dresses. Velveteen color refers to a Liberty-of-London Edwardian-period velveteen day-dress: a saturated, slightly cool deep magenta with the velvet finish of synthetic-dyed cotton pile. Warmer than silk velvet, cooler than cotton-blend corduroy.

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.

#a31b7a
Original
#2e4b7c
Protanopia
#596177
Deuteranopia
#ae1a4a
Tritanopia
#3f3f3f
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
7.01:1
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
3.00:1

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
##A31B7A
Display P3
Display P3
color(display-p3 0.5866 0.1631 0.4664)
P3 has visible headroomOKLCH chroma 0.191

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.

Related Colors

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