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Timeworn Tortoise

#585037
Notes

Timeworn Tortoise (#585037) is a deep amber 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 (45°, 23%, 28%) places it in the muted band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. For a confident two-color system, pair it with its complementary blue. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#585037
RGB
rgb(88, 80, 55)
HSL
hsl(45, 23%, 28%)
HWB
hwb(45 22% 65%)
OKLCH
oklch(43.2% 0.040 92.4)
P3
color(display-p3 0.3398 0.3148 0.2273)
HSV
hsv(45, 37%, 35%)
LAB
lab(34.17% -0.99 15.96)
LCH
lch(34.17% 15.99 93.53)
CMYK
cmyk(0%, 9%, 37%, 65%)

Etymology

Timeworn
adjective

A compound of time and worn — used as a color modifier since the nineteenth century for hues that have aged through long use. Timeworn brass, timeworn paper: low saturation combined with the optical evenness of a surface that has reached its final patina. Sits at the hushed-bucket alongside aged and worn.

Tortoise
noun

The mottled brown-gold of Eretmochelys imbricata (hawksbill sea turtle) shell — used for combs, eyeglass frames, and ornamental boxes from Roman times until the species was protected in 1973. The color refers to a polished tortoiseshell comb: a warm, slightly translucent gold-brown with the optical complexity of layered keratin.

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.

#585037
Original
#554f35
Protanopia
#575138
Deuteranopia
#5d4c49
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).
AAAon White
8.02:1
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
2.62:1

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
##585037
Display P3
Display P3
color(display-p3 0.3398 0.3148 0.2273)
Inside sRGBOKLCH chroma 0.040

This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.

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