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Resolute Lake

#ac223c
Notes

Resolute Lake (#AC223C) is a true red with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (349°, 67%, 40%) 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
#ac223c
RGB
rgb(172, 34, 60)
HSL
hsl(349, 67%, 40%)
HWB
hwb(349 13% 33%)
OKLCH
oklch(49.0% 0.172 16.7)
HSV
hsv(349, 80%, 67%)
LAB
lab(38.28% 55.31 20.64)
LCH
lch(38.28% 59.03 20.46)
CMYK
cmyk(0%, 80%, 65%, 33%)

Etymology

Resolute
adjective

From the Latin resolutus, unwavering — used as a color modifier in literary contexts for hues that read as committed and unmoving. Resolute blue, resolute green: the saturation is full, the hue holds its position without shifting under different light. Sits in the bold-bucket center alongside strong and true, with slightly more focus on stability than presence.

Lake
noun

A general term for an organic pigment laked onto an inorganic base — particularly red lakes from kermes, cochineal, or madder, used in Renaissance and Baroque oil painting where pure plant or insect dyes lacked stability. The color refers to a cochineal lake-tinted glaze in a Vermeer painting: a saturated, slightly cool deep red with the matte translucency of a thin pigment-and-binder layer.

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.

#ac223c
Original
#4b483c
Protanopia
#6e6438
Deuteranopia
#bd002d
Tritanopia
#414141
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
6.89:1
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
3.05:1

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