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Open Dill Turquoise

#05bdcc
Notes

Open Dill Turquoise (#05BDCC) is a true cyan with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (185°, 95%, 41%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. 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
#05bdcc
RGB
rgb(5, 189, 204)
HSL
hsl(185, 95%, 41%)
HWB
hwb(185 2% 20%)
OKLCH
oklch(72.9% 0.124 204.9)
HSV
hsv(185, 98%, 80%)
LAB
lab(70.02% -33.59 -18.74)
LCH
lch(70.02% 38.46 209.15)
CMYK
cmyk(98%, 7%, 0%, 20%)

Etymology

Open
adjective

Old English open, unobstructed — used as a color modifier since the eighteenth century for hues that read as airy or uncrowded. Open blue, open green: moderate saturation combined with optical spaciousness, the slight visual breath of a hue that doesn't crowd the surface it covers. Sits at the crisp-bucket center alongside clear.

Dill
modifier

Old English dile, aromatic-fern-leaf-herb. As a color modifier, dill implies a feathery-and-fresh-and-pickling quality, the visual register of Scandinavian-and-pickling-dill hand-feathery-and-fresh-and-pickling Scandinavian-and-pickling-dill-and-Polish-Eastern-European dill-and-feathery-and-fresh-and-pickling surfaces under Scandinavian-and-pickling-dill-and-Polish-Eastern-European Stockholm-and-Gdansk-and-Riga-pickling-jar Baltic-pickling-light. Sits at the modifier-and-flavor end of the grid, parallel to chive and anise in usage.

Turquoise
noun

The hydrated copper-aluminum phosphate mined in Persia and the American Southwest for thousands of years — the firuze of Iran, the chalchihuitl of Mesoamerica, the heart of Pueblo and Navajo silverwork. The color refers to a fine Sleeping Beauty turquoise from Arizona: a saturated, slightly green-shifted blue with the slight matrix of host-rock veining. Brighter than persian, lighter than cerulean.

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.

#05bdcc
Original
#acb5cd
Protanopia
#95a4cc
Deuteranopia
#00c6c1
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
2.29:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
9.16:1

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