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Aboriginal Rampart

#171521
Notes

Aboriginal Rampart (#171521) is a deep indigo 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 (250°, 22%, 11%) places it in the muted 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 yellow. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#171521
RGB
rgb(23, 21, 33)
HSL
hsl(250, 22%, 11%)
HWB
hwb(250 8% 87%)
OKLCH
oklch(20.4% 0.024 291.8)
P3
color(display-p3 0.0888 0.0826 0.1260)
HSV
hsv(250, 36%, 13%)
LAB
lab(7.48% 4.41 -8.00)
LCH
lch(7.48% 9.13 298.85)
CMYK
cmyk(30%, 36%, 0%, 87%)

Etymology

Aboriginal
adjective

Latin ab origine, from-the-beginning — adjectival suffix -al. As a color modifier, aboriginal implies a neutral-and-original-and-indigenous quality, the neutral color of Aboriginal-Australian dot-and-X-ray-painting traditional-and-original earth-and-mineral-pigment ceremonial-craft tradition. Sits at the neutral-and-traditional end of the grid, parallel to indigenous and native in usage.

Rampart
noun

Old French rampart, defensive-wall — the deep-cool-gray fortified outer-wall of medieval-and-Renaissance European fortress architecture, particularly the Saint-Malo and Aigues-Mortes sea-port ramparts. Rampart color refers to a Saint-Malo outer-rampart face at high-tide: a dark cool-gray with the matte finish of Cap-Fréhel granite hand-quarried fortification stone with multi-decade saltwater-and-lichen patina.

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.

#171521
Original
#121722
Protanopia
#121621
Deuteranopia
#151719
Tritanopia
#161616
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
18.02:1
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
1.17:1

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
##171521
Display P3
Display P3
color(display-p3 0.0888 0.0826 0.1260)
Inside sRGBOKLCH chroma 0.024

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.

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