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Rich Argaman

#870d49
Notes

Rich Argaman (#870D49) is a deep magenta 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 (330°, 82%, 29%) 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 teal. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#870d49
RGB
rgb(135, 13, 73)
HSL
hsl(330, 82%, 29%)
HWB
hwb(330 5% 47%)
OKLCH
oklch(41.1% 0.158 358.7)
HSV
hsv(330, 90%, 53%)
LAB
lab(29.21% 51.26 -1.58)
LCH
lch(29.21% 51.28 358.23)
CMYK
cmyk(0%, 90%, 46%, 47%)

Etymology

Rich
adjective

Old French riche, wealthy, abundant — applied to color since the medieval period for hues that read as plentiful in pigment. Rich red, rich brown: the implication is depth combined with saturation, a color that gives the eye more to absorb. Sits at the saturated mid-light corner of the engine's grid, slightly warmer than bold and deeper than vivid.

Argaman
noun

The Hebrew word for the imperial purple of Tyre — used in the Hebrew Bible as the color of priestly garments, royal robes, and tabernacle hangings. Argaman is derived from the murex sea snail, dyed at industrial scale at the Phoenician city of Tyre. The color refers to argaman-dyed wool: a deep, slightly cool red-purple with the matte finish of multi-bath shellfish dye. Cooler than crimson.

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.

#870d49
Original
#2e364a
Protanopia
#4f4d46
Deuteranopia
#93002b
Tritanopia
#2b2b2b
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
9.62:1
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
2.18:1

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