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Murmured Stream

#648d91
Notes

Murmured Stream (#648D91) is a true cyan 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 (185°, 18%, 48%) 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 red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#648d91
RGB
rgb(100, 141, 145)
HSL
hsl(185, 18%, 48%)
HWB
hwb(185 39% 43%)
OKLCH
oklch(61.5% 0.045 203.6)
P3
color(display-p3 0.4264 0.5485 0.5651)
HSV
hsv(185, 31%, 57%)
LAB
lab(55.89% -13.02 -6.67)
LCH
lch(55.89% 14.63 207.12)
CMYK
cmyk(31%, 3%, 0%, 43%)

Etymology

Murmured
adjective

Latin murmurāre, to murmur — past-participle of murmur. As a color modifier, murmured implies a hushed-and-soft-spoken-and-quiet quality where the hue carries the visual register of soft-and-quiet-conversation ambient color. Sits at the hushed-and-soft end of the grid, parallel to whispered and softened in usage.

Stream
noun

A narrow flowing body of fresh water — smaller than a river, larger than a creek. The color refers to a clear stream over a gravel bed in temperate woodland: a soft, slightly green-shifted blue with the optical clarity of unsilted water. Cooler than aqua, lighter than tide, with the hydrological weight of a word that appears across nearly every English landscape vocabulary.

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.

#648d91
Original
#878991
Protanopia
#7f8391
Deuteranopia
#54908e
Tritanopia
#858585
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
3.65:1
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
5.76:1

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
##648D91
Display P3
Display P3
color(display-p3 0.4264 0.5485 0.5651)
Inside sRGBOKLCH chroma 0.045

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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