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Knightly Tart Cardinal

#b42e7b
Notes

Knightly Tart Cardinal (#B42E7B) is a true magenta with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (326°, 59%, 44%) 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
#b42e7b
RGB
rgb(180, 46, 123)
HSL
hsl(326, 59%, 44%)
HWB
hwb(326 18% 29%)
OKLCH
oklch(53.2% 0.184 350.1)
HSV
hsv(326, 74%, 71%)
LAB
lab(42.90% 59.39 -12.20)
LCH
lch(42.90% 60.63 348.39)
CMYK
cmyk(0%, 74%, 32%, 29%)

Etymology

Knightly
adjective

Old English cniht, young man / knight — adjectival suffix -ly. As a color modifier, knightly implies a saturated-and-chivalrous-and-medieval quality, the deep-rich color of medieval-English-and-French knight-and-squire armorial-bearings-and-livery tradition. Sits at the bold-and-chivalrous end of the grid, parallel to gallant and cavalier.

Tart
modifier

Old English teart, sharp-or-acid-tasting. As a color modifier, tart implies a sharp-acid-and-fruit-puckered quality, the visual register of Bramley-apple-and-rhubarb-tart hand-sharp-acid-and-fruit-puckered Bramley-apple-and-rhubarb-tart-and-Yorkshire-orchard tart-and-sharp-acid-and-fruit-puckered surfaces under Bramley-apple-and-rhubarb-tart-and-Yorkshire-orchard Yorkshire-orchard-and-Kentish-Garden-of-England puckered-orchard-light. Sits at the modifier-and-flavor end of the grid, parallel to sour and tang in usage.

Cardinal
noun

Named for the scarlet robes of Roman Catholic cardinals, dyed since the thirteenth century with kermes and later cochineal. The color carries the institutional weight of its source — a saturated red-orange that reads as authority rather than romance. Also the bird (Cardinalis cardinalis) of the American east, whose plumage takes its red from carotenoid pigments in the seeds it eats.

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.

#b42e7b
Original
#44567d
Protanopia
#6b6e78
Deuteranopia
#c12550
Tritanopia
#505050
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
5.81:1
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
3.62:1

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