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Cellared Sidon

#660888
Notes

Cellared Sidon (#660888) is a deep violet 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 (284°, 89%, 28%) 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
#660888
RGB
rgb(102, 8, 136)
HSL
hsl(284, 89%, 28%)
HWB
hwb(284 3% 47%)
OKLCH
oklch(38.8% 0.186 313.5)
P3
color(display-p3 0.3651 0.0765 0.5134)
HSV
hsv(284, 94%, 53%)
LAB
lab(26.09% 54.70 -47.71)
LCH
lch(26.09% 72.59 318.91)
CMYK
cmyk(25%, 94%, 0%, 47%)

Etymology

Cellared
adjective

Latin cellārium, storehouse — past-participle of cellar. As a color modifier, cellared implies the deep-and-cool-and-architectural quality of Bordeaux-and-Burgundy wine-cellar underground stone-and-oak storage-chamber, with the patina of multi-decade barrel-aging-and-bottle-laying. Sits at the deep-and-architectural end of the grid, parallel to crypted with viticulture register.

Sidon
noun

Ancient Phoenician city on the Lebanese coast — co-eval with Tyre in Tyrian purple production, and the slightly older of the two purple-dye centers. Sidon color refers to a Sidon-produced Tyrian purple-dyed Phoenician trade textile: a saturated, slightly cool deep violet with the matte finish of multi-bath Hexaplex trunculus shellfish dye on hand-loomed Levantine cloth.

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.

#660888
Original
#00398b
Protanopia
#004086
Deuteranopia
#622f4e
Tritanopia
#252525
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
10.74:1
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
1.96:1

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
##660888
Display P3
Display P3
color(display-p3 0.3651 0.0765 0.5134)
P3 has visible headroomOKLCH chroma 0.186

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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