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Resounding Echinacea

#b73289
Notes

Resounding Echinacea (#B73289) 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 (321°, 57%, 46%) 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
#b73289
RGB
rgb(183, 50, 137)
HSL
hsl(321, 57%, 46%)
HWB
hwb(321 20% 28%)
OKLCH
oklch(54.6% 0.190 345.1)
P3
color(display-p3 0.6615 0.2389 0.5253)
HSV
hsv(321, 73%, 72%)
LAB
lab(44.46% 60.56 -18.34)
LCH
lch(44.46% 63.27 343.15)
CMYK
cmyk(0%, 73%, 25%, 28%)

Etymology

Resounding
adjective

Latin resonāre, to echo back — present-participle of resound. As a color modifier, resounding implies a saturated-and-echoing-and-imposing quality where the hue reverberates visually like a cathedral-bell ring. Sits at the bold-and-resonant end of the grid, parallel to resonant and booming in usage.

Echinacea
noun

North American purple coneflower (Echinacea purpurea) — a midwestern-prairie Asteraceae perennial with deep-magenta drooping ray-flowers and a prominent rust-orange disk-cone center. Echinacea color refers to a fully opened Echinacea purpurea ray-flower in late-summer light: a saturated, slightly cool deep magenta with the velvet finish of fresh drooping ray-flowers. The Greek genus name echínos (hedgehog) refers to the prickly disk.

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.

#b73289
Original
#425b8b
Protanopia
#6a7186
Deuteranopia
#c33059
Tritanopia
#555555
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
5.48:1
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
3.83:1

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
##B73289
Display P3
Display P3
color(display-p3 0.6615 0.2389 0.5253)
P3 has visible headroomOKLCH chroma 0.190

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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