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Firm Polygala

#c638a2
Notes

Firm Polygala (#C638A2) 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 (315°, 56%, 50%) 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
#c638a2
RGB
rgb(198, 56, 162)
HSL
hsl(315, 56%, 50%)
HWB
hwb(315 22% 22%)
OKLCH
oklch(58.6% 0.208 340.0)
HSV
hsv(315, 72%, 78%)
LAB
lab(48.82% 65.62 -26.41)
LCH
lch(48.82% 70.74 338.08)
CMYK
cmyk(0%, 72%, 18%, 22%)

Etymology

Firm
adjective

Latin firmus, strong / stable — sharing root with English farm (originally a fixed-yearly-rental). As a color modifier, firm implies a saturated-and-resolute quality where the hue holds its visual position without wavering. Sits at the bold-and-firm end of the grid, parallel to steadfast and unwavering in usage.

Polygala
noun

Eurasian milkwort (Polygala myrtifolia) — a Polygalaceae evergreen shrub native to South Africa cultivated worldwide as a Mediterranean garden plant for its deep-magenta keel-shaped flowers in axial racemes. Polygala color refers to a fully bloomed Polygala myrtifolia keel-flower on a Cape Floristic Region shrub: a saturated, slightly cool deep magenta with the velvet finish of fresh keel-shaped legume-form flower. The Greek poly-gala means much milk.

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.

#c638a2
Original
#4166a5
Protanopia
#6f7c9f
Deuteranopia
#d23c68
Tritanopia
#5e5e5e
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
4.68:1
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
4.49:1

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