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Shaded Akebia

#581b87
Notes

Shaded Akebia (#581B87) is a deep indigo 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 (274°, 67%, 32%) places it in the balanced 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 lime. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#581b87
RGB
rgb(88, 27, 135)
HSL
hsl(274, 67%, 32%)
HWB
hwb(274 11% 47%)
OKLCH
oklch(38.0% 0.167 305.1)
P3
color(display-p3 0.3175 0.1223 0.5096)
HSV
hsv(274, 80%, 53%)
LAB
lab(25.59% 46.84 -48.00)
LCH
lch(25.59% 67.07 314.30)
CMYK
cmyk(35%, 80%, 0%, 47%)

Etymology

Shaded
adjective

Old English sceadwian, to cover with shadow — past-participle of shade. As a color modifier, shaded implies a hue darkened by overhead-foliage-or-architectural-element occlusion in pre-modern garden-and-courtyard tradition. Sits at the deep-and-obscured end of the grid, parallel to shadowy but more architectural in connotation.

Akebia
noun

Asian chocolate vine (Akebia quinata) — a deciduous twining vine native to Japan, China, and Korea, with deep-violet five-petaled flowers that release a chocolate-like fragrance in late spring. Akebia color refers to a fully bloomed Akebia quinata female flower: a saturated, slightly cool deep violet with the velvet finish of fused-petaled cup-flower. The Japanese name akebi refers to the pendulous fruit pods.

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.

#581b87
Original
#003b8a
Protanopia
#003d85
Deuteranopia
#4f3751
Tritanopia
#303030
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
10.93:1
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
1.92:1

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
##581B87
Display P3
Display P3
color(display-p3 0.3175 0.1223 0.5096)
P3 has subtle headroomOKLCH chroma 0.167

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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