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Authoritative Achimenes

#ad1b88
Notes

Authoritative Achimenes (#AD1B88) is a true magenta with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (315°, 73%, 39%) 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
#ad1b88
RGB
rgb(173, 27, 136)
HSL
hsl(315, 73%, 39%)
HWB
hwb(315 11% 32%)
OKLCH
oklch(51.3% 0.205 341.4)
HSV
hsv(315, 84%, 68%)
LAB
lab(40.33% 64.54 -24.26)
LCH
lch(40.33% 68.95 339.40)
CMYK
cmyk(0%, 84%, 21%, 32%)

Etymology

Authoritative
adjective

Latin auctōritāt-, authority — adjectival suffix -ive. As a color modifier, authoritative implies a saturated-and-formal-imperative quality where the hue carries decisional weight and institutional credibility. Sits at the bold-and-authoritative end of the grid, parallel to commanding and magisterial in usage.

Achimenes
noun

Mexican magic flower (Achimenes longiflora) — a Gesneriaceae tuberous-rhizome perennial native to Central American cloud-forest understory, with deep-magenta tubular flowers that bloom in summer and dormant rhizomes in winter. Achimenes color refers to a fully opened Achimenes longiflora tubular flower: a saturated, slightly cool deep magenta with the velvet finish of fresh fused-petaled tubular corolla. Greek achimenes means winter-tender.

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.

#ad1b88
Original
#2c508b
Protanopia
#5c6785
Deuteranopia
#b81f52
Tritanopia
#424242
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
6.38:1
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
3.29:1

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