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Murmuring Tortoise

#837a5a
Notes

Murmuring Tortoise (#837A5A) is a true 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 (47°, 19%, 43%) places it in the muted 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 blue. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#837a5a
RGB
rgb(131, 122, 90)
HSL
hsl(47, 19%, 43%)
HWB
hwb(47 35% 49%)
OKLCH
oklch(57.9% 0.047 94.3)
P3
color(display-p3 0.5077 0.4797 0.3672)
HSV
hsv(47, 31%, 51%)
LAB
lab(51.25% -1.85 18.81)
LCH
lch(51.25% 18.90 95.63)
CMYK
cmyk(0%, 7%, 31%, 49%)

Etymology

Murmuring
adjective

Latin murmurāre, to murmur — present-participle of murmur. As a color modifier, murmuring implies a hushed-and-soft-spoken-and-low-volume quality where the hue carries the visual register of soft-and-low-conversation ambient color-tone. Sits at the hushed-and-soft end of the grid, parallel to whispering and susurrant in usage.

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.

#837a5a
Original
#817858
Protanopia
#837b5b
Deuteranopia
#897572
Tritanopia
#7a7a7a
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).
AA Largeon White
4.29:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
4.90:1

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
##837A5A
Display P3
Display P3
color(display-p3 0.5077 0.4797 0.3672)
Inside sRGBOKLCH chroma 0.047

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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