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Sinewy Salmon

#ac2104
Notes

Sinewy Salmon (#AC2104) 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 (10°, 95%, 35%) places it in the highly saturated band at a mid 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
#ac2104
RGB
rgb(172, 33, 4)
HSL
hsl(10, 95%, 35%)
HWB
hwb(10 2% 33%)
OKLCH
oklch(48.3% 0.178 32.5)
P3
color(display-p3 0.6197 0.1842 0.0949)
HSV
hsv(10, 98%, 67%)
LAB
lab(37.61% 53.82 49.27)
LCH
lch(37.61% 72.96 42.47)
CMYK
cmyk(0%, 81%, 98%, 33%)

Etymology

Sinewy
adjective

Old English sinu, sinew — adjectival suffix -y. As a color modifier, sinewy implies a saturated-and-muscular-and-firm quality where the hue carries the lean-and-strong visual presence of a Roman-statue athletic figure. Sits at the bold-and-firm end of the grid, parallel to stalwart and rugged in usage.

Salmon
noun

Named for the flesh of the wild Pacific or Atlantic salmon — Oncorhynchus and Salmo salar — colored by carotenoid pigments in the krill and shrimp the fish eats. A pale, peachy red that sits between coral and apricot, warmer than rose and lighter than vermillion. In farmed salmon the color is added to the feed; in wild salmon, it's diet alone.

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.

#ac2104
Original
#4f4500
Protanopia
#716300
Deuteranopia
#be001e
Tritanopia
#3c3c3c
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
7.06:1
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
2.97:1

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
##AC2104
Display P3
Display P3
color(display-p3 0.6197 0.1842 0.0949)
P3 has subtle headroomOKLCH chroma 0.178

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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