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Useful Caraway Turquoise

#3bb5cb
Notes

Useful Caraway Turquoise (#3BB5CB) is a true 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 (189°, 58%, 51%) 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
#3bb5cb
RGB
rgb(59, 181, 203)
HSL
hsl(189, 58%, 51%)
HWB
hwb(189 23% 20%)
OKLCH
oklch(71.6% 0.109 212.2)
HSV
hsv(189, 71%, 80%)
LAB
lab(68.23% -26.06 -20.85)
LCH
lch(68.23% 33.38 218.66)
CMYK
cmyk(71%, 11%, 0%, 20%)

Etymology

Useful
adjective

Latin ūsus, use — adjectival suffix -ful. As a color modifier, useful implies a clear-and-purpose-serving quality where the hue carries the visual register of helpful-and-supporting design-element. Sits at the crisp-and-functional end of the grid, parallel to practical and serviceable in usage.

Caraway
modifier

Arabic al-karawiyā, aromatic-rye-bread-seed. As a color modifier, caraway implies an aromatic-rye-bread-and-Central-European-seed quality, the visual register of Bavarian-and-Central-European-caraway hand-aromatic-rye-bread-and-Central-European-seed Bavarian-and-Central-European-caraway-and-Czech-and-Hungarian-rye caraway-and-aromatic-rye-bread surfaces under Bavarian-and-Central-European-caraway-and-Czech-and-Hungarian-rye Bavaria-and-Bohemia-and-Hungary Central-European-rye-light. Sits at the modifier-and-flavor end of the grid, parallel to cumin 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

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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.

#3bb5cb
Original
#a4afcc
Protanopia
#90a0cb
Deuteranopia
#00bebc
Tritanopia
#9d9d9d
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
2.43:1
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
8.66:1

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