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Folded Stream

#1e5b73
Notes

Folded Stream (#1E5B73) is a deep cyan with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (197°, 59%, 28%) places it in the balanced 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 orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#1e5b73
RGB
rgb(30, 91, 115)
HSL
hsl(197, 59%, 28%)
HWB
hwb(197 12% 55%)
OKLCH
oklch(44.3% 0.072 228.1)
P3
color(display-p3 0.1872 0.3518 0.4416)
HSV
hsv(197, 74%, 45%)
LAB
lab(35.97% -10.82 -19.26)
LCH
lch(35.97% 22.09 240.68)
CMYK
cmyk(74%, 21%, 0%, 55%)

Etymology

Folded
adjective

Old English fealdan, to fold — past-participle of fold. As a color modifier, folded implies a clear-and-creased-and-arranged quality where the hue carries the visual register of carefully-folded-and-neatly-arranged textile surface. Sits at the crisp-and-finished end of the grid, parallel to pressed and trim 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.

#1e5b73
Original
#4e5974
Protanopia
#435173
Deuteranopia
#006263
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
7.50:1
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
2.80:1

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
##1E5B73
Display P3
Display P3
color(display-p3 0.1872 0.3518 0.4416)
Inside sRGBOKLCH chroma 0.072

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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