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Fortified Toltec Crimson

#b52c24
Notes

Fortified Toltec Crimson (#B52C24) 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 (3°, 67%, 43%) 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 cyan. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#b52c24
RGB
rgb(181, 44, 36)
HSL
hsl(3, 67%, 43%)
HWB
hwb(3 14% 29%)
OKLCH
oklch(51.1% 0.175 28.4)
P3
color(display-p3 0.6534 0.2200 0.1748)
HSV
hsv(3, 80%, 71%)
LAB
lab(40.83% 53.83 38.45)
LCH
lch(40.83% 66.15 35.54)
CMYK
cmyk(0%, 76%, 80%, 29%)

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.

Toltec
modifier

Nahuatl Tolteca, Toltec. As a color modifier, toltec implies a Tula-and-Mesoamerican quality, the visual register of Toltec-civilization-of-Tula post-Classic Mesoamerican hand-carved Atlantean-warrior-and-feathered-serpent stone-monumental surfaces under Tula-Hidalgo-and-Chichen-Itza post-Classic Mesoamerican high-altitude light. Sits at the modifier-and-cultural end of the grid, parallel to aztec and olmec in usage.

Crimson
noun

From the Old Spanish cremesin, itself from the Arabic qirmiz — the kermes scale insect, dried and ground into a brilliant carmine dye prized in the medieval Mediterranean. For centuries the most expensive red on a draper's shelf, reserved for cardinals, kings, and the cloth that gave English the word crimson. Cooler than scarlet, deeper than rose; the color of pomegranate seeds and a serious occasion.

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.

#b52c24
Original
#564d21
Protanopia
#786b1e
Deuteranopia
#c8002c
Tritanopia
#494949
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
6.27:1
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
3.35:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##B52C24
Display P3
Display P3
color(display-p3 0.6534 0.2200 0.1748)
P3 has subtle headroomOKLCH chroma 0.175

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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