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Spotless Mandevilla

#643f55
Notes

Spotless Mandevilla (#643F55) is a deep magenta with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (324°, 23%, 32%) places it in the muted band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. 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
#643f55
RGB
rgb(100, 63, 85)
HSL
hsl(324, 23%, 32%)
HWB
hwb(324 25% 61%)
OKLCH
oklch(41.8% 0.061 343.6)
P3
color(display-p3 0.3713 0.2535 0.3291)
HSV
hsv(324, 37%, 39%)
LAB
lab(31.63% 19.82 -6.50)
LCH
lch(31.63% 20.86 341.83)
CMYK
cmyk(0%, 37%, 15%, 61%)

Etymology

Spotless
adjective

Old English spott (spot) plus suffix -less. As a color modifier, spotless implies a clear-and-unmarked quality where the hue carries no contaminating speck or stain. Sits at the crisp-and-clean end of the grid, parallel to pristine and unblemished in usage.

Mandevilla
noun

South American rocktrumpet (Mandevilla sanderi) — a tropical Apocynaceae twining-vine cultivated worldwide for its trumpet-shaped deep-magenta flowers held above glossy evergreen foliage. Mandevilla color refers to a fully opened Mandevilla sanderi trumpet flower: a saturated, slightly cool deep magenta with the velvet finish of fresh fused-petaled trumpet corolla. Named for Henry Mandeville, English diplomat in Buenos Aires.

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.

#643f55
Original
#414756
Protanopia
#4a4d54
Deuteranopia
#693f47
Tritanopia
#484848
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
8.81:1
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
2.38:1

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
##643F55
Display P3
Display P3
color(display-p3 0.3713 0.2535 0.3291)
Inside sRGBOKLCH chroma 0.061

This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.

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