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Shielded Nap Crimson

#a72118
Notes

Shielded Nap Crimson (#A72118) is a true red with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (4°, 75%, 37%) 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
#a72118
RGB
rgb(167, 33, 24)
HSL
hsl(4, 75%, 37%)
HWB
hwb(4 9% 35%)
OKLCH
oklch(47.5% 0.171 29.2)
P3
color(display-p3 0.6017 0.1811 0.1334)
HSV
hsv(4, 86%, 65%)
LAB
lab(36.69% 52.64 39.93)
LCH
lch(36.69% 66.07 37.19)
CMYK
cmyk(0%, 80%, 86%, 35%)

Etymology

Shielded
adjective

Old English scild, shield — past-participle of shield, sharing root with German Schild. As a color modifier, shielded implies a saturated-and-protected-and-defensive quality, the deep-rich color of medieval-knight armorial-shield-and-coat-of-arms heraldic display. Sits at the bold-and-fortified end of the grid, parallel to armored and bastioned.

Nap
modifier

Old English hnoppa, short-fluff-on-cloth. As a color modifier, nap implies a short-fluff-on-cloth-surface quality, the visual register of brushed-flannel-and-velveteen-nap hand-brushed-and-raised short-fluff-on-cloth-surface flannel-and-velveteen-and-felt-nap surfaces under brushed-flannel-and-velveteen-nap textile-light. Sits at the modifier-and-texture end of the grid, parallel to pile and fluff 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.

#a72118
Original
#4c4415
Protanopia
#6d610f
Deuteranopia
#b90021
Tritanopia
#3d3d3d
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).
AAAon White
7.31:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.87:1

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
##A72118
Display P3
Display P3
color(display-p3 0.6017 0.1811 0.1334)
P3 has subtle headroomOKLCH chroma 0.171

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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