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Tough Crinoline

#ac378d
Notes

Tough Crinoline (#AC378D) 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 (316°, 52%, 45%) 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
#ac378d
RGB
rgb(172, 55, 141)
HSL
hsl(316, 52%, 45%)
HWB
hwb(316 22% 33%)
OKLCH
oklch(53.6% 0.178 340.1)
HSV
hsv(316, 68%, 67%)
LAB
lab(43.40% 56.38 -22.56)
LCH
lch(43.40% 60.73 338.20)
CMYK
cmyk(0%, 68%, 18%, 33%)

Etymology

Tough
adjective

Old English tōh, firm / tenacious — sharing root with German zäh. As a color modifier, tough implies a saturated-and-resilient quality where the hue resists fading-and-modulation through its strong pigmentation. Sits at the bold-and-resilient end of the grid, parallel to rugged and hardy in usage.

Crinoline
noun

French crin, horsehair — Originally a stiff horsehair-and-linen petticoat fabric, the term crinoline came to refer to the cage-and-hoop dress structure of the 1850s–60s. The deep-magenta fuchsine-dyed crinoline silk was the dominant Belle-Époque colour. Crinoline color refers to a Worth-period crinoline-skirt silk faille: a saturated, slightly cool deep magenta with the silky finish of fuchsine-dyed jacquard-figured Lyon silk.

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.

#ac378d
Original
#3e5b8f
Protanopia
#636d8a
Deuteranopia
#b63a5d
Tritanopia
#565656
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
5.70:1
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
3.69:1

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