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Reinforced Falun

#b21739
Notes

Reinforced Falun (#B21739) 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 (347°, 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
#b21739
RGB
rgb(178, 23, 57)
HSL
hsl(347, 77%, 39%)
HWB
hwb(347 9% 30%)
OKLCH
oklch(49.3% 0.185 17.1)
HSV
hsv(347, 87%, 70%)
LAB
lab(38.51% 59.47 23.08)
LCH
lch(38.51% 63.79 21.21)
CMYK
cmyk(0%, 87%, 68%, 30%)

Etymology

Reinforced
adjective

Latin re- plus inforce — past-participle of reinforce. As a color modifier, reinforced implies a saturated-and-doubled-up-and-strengthened quality where the hue carries layered pigmentation for maximum visual presence. Sits at the bold-and-fortified end of the grid, parallel to fortified and buttressed.

Falun
noun

The Swedish copper-mining town that gave its name to Falun-red — the iron-oxide paint produced as a byproduct of copper smelting and used to coat almost every wooden Swedish farmhouse since the seventeenth century. The color refers to a freshly painted Falun-red barn: a saturated, slightly muted deep red-brown with the matte finish of clay-and-iron-oxide paint. Drier than maroon, warmer than burgundy.

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.

#b21739
Original
#4a4639
Protanopia
#706634
Deuteranopia
#c40027
Tritanopia
#3a3a3a
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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