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Fortified Alkanet

#cb1e11
Notes

Fortified Alkanet (#CB1E11) 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 (4°, 85%, 43%) 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
#cb1e11
RGB
rgb(203, 30, 17)
HSL
hsl(4, 85%, 43%)
HWB
hwb(4 7% 20%)
OKLCH
oklch(54.0% 0.206 29.8)
HSV
hsv(4, 92%, 80%)
LAB
lab(43.76% 63.63 51.68)
LCH
lch(43.76% 81.98 39.08)
CMYK
cmyk(0%, 85%, 92%, 20%)

Etymology

Fortified
adjective

Latin fortificāre, to make strong — past-participle of fortify. As a color modifier, fortified implies a saturated-and-strengthened-and-defensive quality, the deep-rich color of Vauban-style military-fortification stone-and-earth rampart-and-bastion architecture. Sits at the bold-and-fortified end of the grid, parallel to bastioned and armored.

Alkanet
noun

Anchusa tinctoria, the Mediterranean borage whose roots yield a red dye used since classical times for cosmetics and wine coloring. The color refers to fresh alkanet-dyed wool: a saturated, slightly cool deep red with the matte finish of plant-and-mordant dye. Cooler than madder, deeper than crimson.

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.

#cb1e11
Original
#5b4f0a
Protanopia
#847500
Deuteranopia
#e0001f
Tritanopia
#424242
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
5.63:1
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
3.73:1

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