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Drawn Tributary

#43adb8
Notes

Drawn Tributary (#43ADB8) 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 (186°, 47%, 49%) 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 red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#43adb8
RGB
rgb(67, 173, 184)
HSL
hsl(186, 47%, 49%)
HWB
hwb(186 26% 28%)
OKLCH
oklch(69.1% 0.097 204.8)
P3
color(display-p3 0.3816 0.6696 0.7136)
HSV
hsv(186, 64%, 72%)
LAB
lab(65.39% -26.62 -14.63)
LCH
lch(65.39% 30.38 208.79)
CMYK
cmyk(64%, 6%, 0%, 28%)

Etymology

Drawn
adjective

Old English dragan, to draw — past-participle of draw. As a color modifier, drawn implies a clear-and-line-and-mark quality, the crisp color of Old-Master-and-Modernist hand-drawn studio-and-life-class observational-drawing graphite-and-charcoal lines. Sits at the crisp-and-incised end of the grid, parallel to etched and drafted in usage.

Tributary
noun

A smaller river that flows into a larger one — the Ohio is a tributary of the Mississippi, the Vltava of the Elbe. Tributary color refers to a clear-water tributary as it joins a sediment-laden main river: a soft, slightly cool deep blue-green with the optical complexity of unmixed clear-and-silty water boundary.

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.

#43adb8
Original
#a0a6b9
Protanopia
#8e99b8
Deuteranopia
#00b4b0
Tritanopia
#979797
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).
Failon White
2.66:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
7.91:1

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
##43ADB8
Display P3
Display P3
color(display-p3 0.3816 0.6696 0.7136)
P3 has subtle headroomOKLCH chroma 0.097

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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