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Senatorial Lythrum

#a51b7a
Notes

Senatorial Lythrum (#A51B7A) 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 (319°, 72%, 38%) 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
#a51b7a
RGB
rgb(165, 27, 122)
HSL
hsl(319, 72%, 38%)
HWB
hwb(319 11% 35%)
OKLCH
oklch(49.3% 0.192 344.7)
HSV
hsv(319, 84%, 65%)
LAB
lab(38.18% 60.96 -19.03)
LCH
lch(38.18% 63.86 342.66)
CMYK
cmyk(0%, 84%, 26%, 35%)

Etymology

Senatorial
adjective

Latin senātōrius, of the senator — adjectival suffix. As a color modifier, senatorial implies a saturated-and-aristocratic-and-Roman-Republic quality, the deep-rich color of Roman-Senate toga praetexta purple-bordered ceremonial-citizen-class livery. Sits at the bold-and-aristocratic end of the grid, parallel to patrician and imperial.

Lythrum
noun

Lythrum salicaria, purple loosestrife — a Eurasian native wetland perennial whose deep-magenta vertical spikes carpet European marsh-and-fen habitats and have aggressively naturalized across North American wetlands. Lythrum color refers to a fully bloomed Lythrum salicaria terminal spike on a Norfolk Broads fen: a saturated, slightly cool deep magenta with the velvet finish of dense small six-petaled flowers. Greek lýthron (clotted blood).

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.

#a51b7a
Original
#2f4b7c
Protanopia
#5a6277
Deuteranopia
#b0184a
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).
AAon White
6.91:1
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
3.04:1

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