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Authoritative Pax Brick

#971c12
Notes

Authoritative Pax Brick (#971C12) is a deep 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 (5°, 79%, 33%) places it in the highly saturated band at a dark 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
#971c12
RGB
rgb(151, 28, 18)
HSL
hsl(5, 79%, 33%)
HWB
hwb(5 7% 41%)
OKLCH
oklch(44.0% 0.160 29.7)
HSV
hsv(5, 88%, 59%)
LAB
lab(32.82% 49.07 38.33)
LCH
lch(32.82% 62.26 38.00)
CMYK
cmyk(0%, 81%, 88%, 41%)

Etymology

Authoritative
adjective

Latin auctōritāt-, authority — adjectival suffix -ive. As a color modifier, authoritative implies a saturated-and-formal-imperative quality where the hue carries decisional weight and institutional credibility. Sits at the bold-and-authoritative end of the grid, parallel to commanding and magisterial in usage.

Pax
modifier

Latin pax, peace-or-treaty. As a color modifier, pax implies a Latin-peace-and-Pax-Romana-and-Pax-Augusta quality, the visual register of Pax-Romana-and-Ara-Pacis hand-Latin-peace-and-Pax-Romana-and-Pax-Augusta Pax-Romana-and-Ara-Pacis-and-Augustan-Rome pax-and-Latin-peace surfaces under Pax-Romana-and-Ara-Pacis-and-Augustan-Rome Augustan-and-Antonine-Rome imperial-peace-light. Sits at the modifier-and-Latin end of the grid, parallel to ave and salve in usage.

Brick
noun

Fired clay, mineral red. The color refers to common building brick — iron-rich earthenware kilned to the specific dusky red-orange of a Victorian terrace, a Roman aqueduct, an adobe wall in New Mexico. Less saturated than ruby, warmer than burgundy, with a chalky cast that reads as architectural rather than decorative.

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.

#971c12
Original
#443c0f
Protanopia
#625709
Deuteranopia
#a7001c
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
8.43:1
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
2.49:1

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