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Plumbed Vermiglione

#640604
Notes

Plumbed Vermiglione (#640604) is a deep red 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 (1°, 92%, 20%) 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 cyan. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#640604
RGB
rgb(100, 6, 4)
HSL
hsl(1, 92%, 20%)
HWB
hwb(1 2% 61%)
OKLCH
oklch(32.0% 0.125 29.0)
HSV
hsv(1, 96%, 39%)
LAB
lab(19.43% 38.83 28.01)
LCH
lch(19.43% 47.88 35.81)
CMYK
cmyk(0%, 94%, 96%, 61%)

Etymology

Plumbed
adjective

Latin plumbum, lead — past-participle of plumb (to measure depth with a lead-weighted line). As a color modifier, plumbed implies a deep-and-cool quality measured-to-its-fullest-depth, the dark cool-gray of lead-and-pewter metallic surfaces. Sits at the deep-and-cool end of the grid, parallel to fathomless with metallic register.

Vermiglione
noun

The Italian name for vermillion — used in the cinnabar-pigment chapters of Cennino Cennini's Il Libro dell'Arte and across Sienese and Florentine fresco. The color refers to vermiglione in a fifteenth-century altarpiece: a saturated, slightly orange red with the matte finish of egg-tempera-bound pigment. The Italian equivalent of bermellón.

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.

#640604
Original
#282202
Protanopia
#3e3600
Deuteranopia
#6f0007
Tritanopia
#1a1a1a
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
13.38:1
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
1.57:1

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