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Grounded Rubellite

#870d47
Notes

Grounded Rubellite (#870D47) 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 (331°, 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
#870d47
RGB
rgb(135, 13, 71)
HSL
hsl(331, 82%, 29%)
HWB
hwb(331 5% 47%)
OKLCH
oklch(41.0% 0.157 359.9)
HSV
hsv(331, 90%, 53%)
LAB
lab(29.15% 51.07 -0.34)
LCH
lch(29.15% 51.07 359.61)
CMYK
cmyk(0%, 90%, 47%, 47%)

Etymology

Grounded
adjective

Old English grund, bottom / foundation — past-participle of ground. As a color modifier, grounded implies a saturated-and-foundational quality where the hue anchors the surrounding palette through its weighty presence. Sits at the bold-and-balanced end of the grid, parallel to centered and anchored.

Rubellite
noun

A red variety of tourmaline — colored by manganese impurities and mined principally in Brazil, Mozambique, and Madagascar. The color refers to a faceted rubellite: a saturated, slightly cool red-pink with the gem's signature internal warmth. Cooler than ruby, brighter than rhodolite.

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.

#870d47
Original
#2f3648
Protanopia
#4f4d44
Deuteranopia
#93002a
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
9.64:1
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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