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Senatorial Crag Brick

#a63658
Notes

Senatorial Crag Brick (#A63658) is a true red with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (342°, 51%, 43%) 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 teal. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#a63658
RGB
rgb(166, 54, 88)
HSL
hsl(342, 51%, 43%)
HWB
hwb(342 21% 35%)
OKLCH
oklch(50.5% 0.149 5.7)
P3
color(display-p3 0.6014 0.2435 0.3459)
HSV
hsv(342, 67%, 65%)
LAB
lab(40.33% 48.55 5.55)
LCH
lch(40.33% 48.87 6.52)
CMYK
cmyk(0%, 67%, 47%, 35%)

Etymology

Senatorial
adjective

Latin senātōrius, of the senator — adjectival suffix. As a color modifier, senatorial implies a saturated-and-aristocratic-and-Roman-Republic quality, the deep-rich color of Roman-Senate toga praetexta purple-bordered ceremonial-citizen-class livery. Sits at the bold-and-aristocratic end of the grid, parallel to patrician and imperial.

Crag
modifier

Old Norse kragi, crag / rock. As a color modifier, crag implies a rough-rock-outcrop quality, the visual register of Lake-District-and-Snowdonia exposed volcanic-and-slate rock-outcrop face-and-scree mountain surfaces under dramatic Lake-District-and-Welsh-Snowdonia mountain-light. Sits at the modifier-and-place end of the grid, parallel to cliff and bluff 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.

#a63658
Original
#4e5159
Protanopia
#6c6755
Deuteranopia
#b42544
Tritanopia
#505050
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
6.38:1
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
3.29:1

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
##A63658
Display P3
Display P3
color(display-p3 0.6014 0.2435 0.3459)
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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