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Assured Falun

#cb181d
Notes

Assured Falun (#CB181D) is a true red with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (358°, 79%, 45%) 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 cyan. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#cb181d
RGB
rgb(203, 24, 29)
HSL
hsl(358, 79%, 45%)
HWB
hwb(358 9% 20%)
OKLCH
oklch(53.7% 0.208 27.2)
HSV
hsv(358, 88%, 80%)
LAB
lab(43.42% 64.99 46.14)
LCH
lch(43.42% 79.70 35.37)
CMYK
cmyk(0%, 88%, 86%, 20%)

Etymology

Assured
adjective

Old French aseürer, to give assurance — past-participle of assure. As a color modifier, assured implies a saturated-and-confident quality where the hue carries unwavering certainty about its own visual identity. Sits at the bold-and-confident end of the grid, parallel to certain and poised.

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

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.

#cb181d
Original
#584e1a
Protanopia
#827410
Deuteranopia
#e0001e
Tritanopia
#3e3e3e
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
5.69:1
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
3.69:1

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