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Stalwart Tyre

#b553cd
Notes

Stalwart Tyre (#B553CD) is a true violet 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 (288°, 55%, 56%) 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 green. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#b553cd
RGB
rgb(181, 83, 205)
HSL
hsl(288, 55%, 56%)
HWB
hwb(288 33% 20%)
OKLCH
oklch(61.3% 0.197 319.3)
HSV
hsv(288, 60%, 80%)
LAB
lab(52.31% 57.58 -46.14)
LCH
lch(52.31% 73.79 321.29)
CMYK
cmyk(12%, 60%, 0%, 20%)

Etymology

Stalwart
adjective

Old English stǣl-wyrðe, stable-and-worthy. As a color modifier, stalwart implies a saturated-and-loyal-and-firm quality where the hue carries the dependable-and-trustworthy visual presence of a Knight-Templar guard. Sits at the bold-and-firm end of the grid, parallel to steadfast and firm in usage.

Tyre
noun

Ancient Phoenician city on the Lebanese coast — the industrial-scale production site for Tyrian purple (the μύρεξ shellfish-dye that ruled Mediterranean elite color codes from 1500 BCE to 1453 CE). Tyre color refers to a Tyre-produced Tyrian purple dyed Roman toga picta: a saturated, slightly cool deep violet with the matte finish of multi-bath Bolinus brandaris shellfish dye on woolen toga cloth.

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.

#b553cd
Original
#3676d1
Protanopia
#5b80ca
Deuteranopia
#b56788
Tritanopia
#717171
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).
AA Largeon White
4.13:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
5.08:1

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