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Shielded Forum Crimson

#d13136
Notes

Shielded Forum Crimson (#D13136) 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 (358°, 63%, 51%) 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
#d13136
RGB
rgb(209, 49, 54)
HSL
hsl(358, 63%, 51%)
HWB
hwb(358 19% 18%)
OKLCH
oklch(56.7% 0.196 24.7)
HSV
hsv(358, 77%, 82%)
LAB
lab(47.00% 61.37 36.51)
LCH
lch(47.00% 71.41 30.75)
CMYK
cmyk(0%, 77%, 74%, 18%)

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.

Forum
modifier

Latin forum, open-space-of-Roman-city. As a color modifier, forum implies a Roman-and-civic-meeting-square quality, the visual register of Roman-Forum-and-Pompeii-Forum hand-built civic-meeting-square forum-and-basilica-and-rostrum Republican-and-Imperial-Roman architectural surfaces under Roman-Forum-and-Pompeii civic-meeting-square light. Sits at the modifier-and-architecture end of the grid, parallel to agora and stoa 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.

#d13136
Original
#625934
Protanopia
#8a7c30
Deuteranopia
#e60035
Tritanopia
#535353
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
5.00:1
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
4.20:1

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