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Untroubled Turchese

#288fc7
Notes

Untroubled Turchese (#288FC7) is a true azure with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (201°, 67%, 47%) 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 orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#288fc7
RGB
rgb(40, 143, 199)
HSL
hsl(201, 67%, 47%)
HWB
hwb(201 16% 22%)
OKLCH
oklch(61.9% 0.124 238.1)
HSV
hsv(201, 80%, 78%)
LAB
lab(56.30% -9.37 -37.08)
LCH
lch(56.30% 38.25 255.81)
CMYK
cmyk(80%, 28%, 0%, 22%)

Etymology

Untroubled
adjective

Latin turbāre, to disturb — negative-prefix un- plus past-participle of trouble. As a color modifier, untroubled implies a clear-and-calm-and-undisturbed quality where the hue carries no visual agitation. Sits at the crisp-and-calm end of the grid, parallel to serene and placid in usage.

Turchese
noun

The Italian word for turquoise — borrowed via medieval trade from Turkish stone (pierre de Turquie). The color refers to a turchese-glazed Venetian Murano-glass piece: a saturated, slightly cool deep blue-green with the high gloss of fired glass. The Italian cousin of türkis.

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.

#288fc7
Original
#748fca
Protanopia
#5f81c6
Deuteranopia
#009da2
Tritanopia
#7d7d7d
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
3.59:1
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
5.84:1

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