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Senatorial Lac

#a30c79
Notes

Senatorial Lac (#A30C79) is a deep 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 (317°, 86%, 34%) places it in the highly saturated band at a dark lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. 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
#a30c79
RGB
rgb(163, 12, 121)
HSL
hsl(317, 86%, 34%)
HWB
hwb(317 5% 36%)
OKLCH
oklch(48.2% 0.200 344.0)
P3
color(display-p3 0.5855 0.1319 0.4621)
HSV
hsv(317, 93%, 64%)
LAB
lab(36.80% 63.14 -20.57)
LCH
lch(36.80% 66.41 341.96)
CMYK
cmyk(0%, 93%, 26%, 36%)

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.

Lac
noun

Indian and Southeast Asian lac insect (Kerria lacca) — a small scale insect that secretes a deep-magenta resinous coating on host-tree branches, harvested for shellac varnish and lac dye. Lac color refers to a freshly lac-dyed Indian wool namda felt rug: a saturated, slightly cool deep magenta with the matte finish of multi-bath insect-resin-dyed wool. The English word lacquer comes from the same root.

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.

#a30c79
Original
#27477b
Protanopia
#565f76
Deuteranopia
#ae0a47
Tritanopia
#343434
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
7.28:1
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
2.89:1

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
##A30C79
Display P3
Display P3
color(display-p3 0.5855 0.1319 0.4621)
P3 has visible headroomOKLCH chroma 0.200

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.

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