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True Khorasani

#7543a5
Notes

True Khorasani (#7543A5) is a true indigo 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 (271°, 42%, 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 lime. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#7543a5
RGB
rgb(117, 67, 165)
HSL
hsl(271, 42%, 45%)
HWB
hwb(271 26% 35%)
OKLCH
oklch(48.9% 0.155 304.9)
HSV
hsv(271, 59%, 65%)
LAB
lab(38.75% 40.86 -44.88)
LCH
lch(38.75% 60.70 312.31)
CMYK
cmyk(29%, 59%, 0%, 35%)

Etymology

True
adjective

Old English trēowe, faithful — used as a color modifier since the seventeenth century for hues that read as the canonical version of their family. True red, true blue: the saturation is full, the hue is neither shifted nor adulterated. Sits at the center of the bold and crisp buckets, marking the unequivocal middle of any chromatic family.

Khorasani
noun

Persian خراسانی, Khorasani-style — the long-historical Iranian region of Khorasan whose Safavid-period silk weavers produced the deep-purple imperial textiles for the Mughal courts of India. Khorasani color refers to a Safavid Khorasan-school silk qaba coat: a saturated, slightly cool deep violet with the silk luster of multi-bath gromwell-root-and-indigo overdye on woven Iranian silk.

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.

#7543a5
Original
#185aa8
Protanopia
#2f5ba3
Deuteranopia
#6d566d
Tritanopia
#555555
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
6.77:1
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
3.10:1

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