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Robust Hollyhock

#b11743
Notes

Robust Hollyhock (#B11743) is a true red with a warm character. It leans warm, pulling light toward red, orange, and yellow. Naturally inviting, it suits editorial and hospitality contexts. Its HSL profile (343°, 77%, 39%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. 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
#b11743
RGB
rgb(177, 23, 67)
HSL
hsl(343, 77%, 39%)
HWB
hwb(343 9% 31%)
OKLCH
oklch(49.3% 0.185 12.7)
HSV
hsv(343, 87%, 69%)
LAB
lab(38.50% 59.77 16.66)
LCH
lch(38.50% 62.04 15.58)
CMYK
cmyk(0%, 87%, 62%, 31%)

Etymology

Robust
adjective

From the Latin robustus, of oak — implying strength combined with substance. As a color modifier, robust describes saturation combined with body: a robust burgundy, a robust olive. Sits in the bold-and-warm corner alongside strong and solid, with the slightly textural implication of a color that has substance behind the pigment.

Hollyhock
noun

Alcea rosea, the tall biennial of European cottage gardens whose red, pink, and white flowers spire above the garden in late summer. The color refers to the deep red variety of hollyhock at full bloom: a saturated, slightly cool deep red with the matte finish of large mallow-family flowers. Deeper than rose, cooler than coral.

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.

#b11743
Original
#484743
Protanopia
#6e663f
Deuteranopia
#c2002c
Tritanopia
#3b3b3b
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
6.83:1
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
3.07:1

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