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Sonorous Monarda

#c21b8a
Notes

Sonorous Monarda (#C21B8A) is a true magenta with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (320°, 76%, 43%) places it in the highly saturated band at a mid 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
#c21b8a
RGB
rgb(194, 27, 138)
HSL
hsl(320, 76%, 43%)
HWB
hwb(320 11% 24%)
OKLCH
oklch(54.9% 0.218 346.7)
HSV
hsv(320, 86%, 76%)
LAB
lab(44.36% 69.42 -18.92)
LCH
lch(44.36% 71.95 344.75)
CMYK
cmyk(0%, 86%, 29%, 24%)

Etymology

Sonorous
adjective

Latin sonōrus, resounding — derived from sonus (sound). As a color modifier, sonorous implies a saturated-and-richly-vibrating quality where the hue carries the deep-resonance visual register of a cathedral-organ-pipe low-note. Sits at the bold-and-resonant end of the grid, parallel to resonant and deep in usage.

Monarda
noun

North American bee balm (Monarda didyma) — a Lamiaceae native of eastern North-American woodland edges, whose deep-magenta whorled flower-heads attract Trochilidae hummingbirds and Bombus bumblebees. Monarda color refers to a fully bloomed Monarda didyma terminal flower-head in an Appalachian late-summer woodland edge: a saturated, slightly cool deep magenta with the velvet finish of fresh tubular flowers in dense whorled clusters.

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.

#c21b8a
Original
#3a578d
Protanopia
#6c7387
Deuteranopia
#d01153
Tritanopia
#474747
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
5.50:1
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
3.82:1

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