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Praetorian Syrup Ruby

#9b1a1b
Notes

Praetorian Syrup Ruby (#9B1A1B) 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 (360°, 71%, 35%) 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
#9b1a1b
RGB
rgb(155, 26, 27)
HSL
hsl(360, 71%, 35%)
HWB
hwb(360 10% 39%)
OKLCH
oklch(44.7% 0.164 26.8)
P3
color(display-p3 0.5577 0.1554 0.1349)
HSV
hsv(360, 83%, 61%)
LAB
lab(33.54% 51.07 34.48)
LCH
lch(33.54% 61.62 34.02)
CMYK
cmyk(0%, 83%, 83%, 39%)

Etymology

Praetorian
adjective

Latin praetōriānus, of the praetor — adjectival suffix, referring to the Roman-Imperial elite guard-cohorts. As a color modifier, praetorian implies a saturated-and-elite-and-imperial-guard quality, the deep-rich color of Roman-Praetorian-Guard elite-imperial-bodyguard scarlet-tunic-and-bronze-armor military-formation. Sits at the bold-and-formal end of the grid, parallel to spartan and imperial.

Syrup
modifier

Arabic sharāb, thick-sweet-drink. As a color modifier, syrup implies a thick-and-amber-and-pourable-sweet quality, the visual register of Vermont-maple-and-Levantine-rose-syrup hand-thick-and-amber-and-pourable-sweet Vermont-maple-and-Levantine-rose-syrup-and-French-grenadine syrup-and-thick-and-amber surfaces under Vermont-maple-and-Levantine-rose-syrup-and-French-grenadine Vermont-sugar-shack-and-Damascus-souk amber-pourable-light. Sits at the modifier-and-flavor end of the grid, parallel to malt and zest in usage.

Ruby
noun

From the Latin ruber — simply, red. The gemstone is a chromium-tinged corundum, harder than anything in nature except diamond, and so saturated that a fine Burmese pigeon's blood ruby at auction outpaces a comparable diamond by weight. The color borrows the gem's confidence: a clear, glassy red without the brown of garnet or the blue of 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

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.

#9b1a1b
Original
#443d19
Protanopia
#645914
Deuteranopia
#ab001d
Tritanopia
#353535
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
8.21:1
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
2.56:1

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
##9B1A1B
Display P3
Display P3
color(display-p3 0.5577 0.1554 0.1349)
P3 has subtle headroomOKLCH chroma 0.164

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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