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Imperial Rakta

#a63e53
Notes

Imperial Rakta (#A63E53) is a true red with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (348°, 46%, 45%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. 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
#a63e53
RGB
rgb(166, 62, 83)
HSL
hsl(348, 46%, 45%)
HWB
hwb(348 24% 35%)
OKLCH
oklch(51.3% 0.138 11.1)
HSV
hsv(348, 63%, 65%)
LAB
lab(41.50% 44.57 10.33)
LCH
lch(41.50% 45.75 13.05)
CMYK
cmyk(0%, 63%, 50%, 35%)

Etymology

Imperial
adjective

From the Latin imperialis, of the empire — applied to color since the medieval period for the hues reserved for sovereigns and empires: imperial purple of Tyrian dye, imperial yellow of Ming-dynasty porcelain. As a modifier, imperial implies saturation combined with the institutional weight of a color owned by a court. Sits in the bold-and-deep corner, alongside royal.

Rakta
noun

The Sanskrit word for red — also meaning blood — used in Vedic texts for the red of sacrificial offerings, the red of dawn, and the red of rakta-chandana (red sandalwood). The color refers to rakta-chandana paste in classical Indian temple ritual: a saturated, slightly cool deep red with the matte finish of ground heartwood. Deeper than madder, 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.

#a63e53
Original
#555553
Protanopia
#706a51
Deuteranopia
#b52e46
Tritanopia
#565656
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).
AAon White
6.11:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.44:1

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