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Authoritative Vega Brick

#91230d
Notes

Authoritative Vega Brick (#91230D) 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 (10°, 84%, 31%) 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
#91230d
RGB
rgb(145, 35, 13)
HSL
hsl(10, 84%, 31%)
HWB
hwb(10 5% 43%)
OKLCH
oklch(43.4% 0.149 32.9)
P3
color(display-p3 0.5229 0.1743 0.0980)
HSV
hsv(10, 91%, 57%)
LAB
lab(32.38% 44.75 39.78)
LCH
lch(32.38% 59.87 41.64)
CMYK
cmyk(0%, 76%, 91%, 43%)

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.

Vega
modifier

Arabic al-nasr-al-wāqi', the-falling-eagle. As a color modifier, vega implies a brilliant-blue-white-and-summer-zenith quality, the visual register of Lyra-constellation-and-northern-summer-Vega hand-brilliant-blue-white-and-summer-zenith Lyra-constellation-and-northern-summer-and-Bortle-1-sky vega-and-brilliant-blue-white-and-summer-zenith surfaces under Lyra-constellation-and-northern-summer-and-Bortle-1-sky July-and-August-northern-zenith deep-sky-light. Sits at the modifier-and-cosmic end of the grid, parallel to deneb and altair 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.

#91230d
Original
#453d08
Protanopia
#605504
Deuteranopia
#a00020
Tritanopia
#393939
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
8.57:1
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
2.45:1

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
##91230D
Display P3
Display P3
color(display-p3 0.5229 0.1743 0.0980)
P3 has subtle headroomOKLCH chroma 0.149

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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