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Calm Bora-Bora

#05b0a4
Notes

Calm Bora-Bora (#05B0A4) is a true cyan with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (176°, 94%, 35%) 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
#05b0a4
RGB
rgb(5, 176, 164)
HSL
hsl(176, 94%, 35%)
HWB
hwb(176 2% 31%)
OKLCH
oklch(68.2% 0.119 186.2)
HSV
hsv(176, 97%, 69%)
LAB
lab(64.77% -39.84 -4.52)
LCH
lch(64.77% 40.09 186.47)
CMYK
cmyk(97%, 0%, 7%, 31%)

Etymology

Calm
adjective

Latin calma, heat of the day — paradoxically drifted in Italian to mean stillness. Used as a color modifier since the seventeenth century for hues that read as untroubled. Calm blue, calm gray: moderate saturation combined with optical quiet. Sits at the crisp-bucket near quiet and steady.

Bora-Bora
noun

The volcanic atoll in French Polynesia — and the saturated turquoise of its central lagoon ringed by motu coral islets. Bora-Bora color refers to the lagoon at sunset: a saturated, slightly cool deep blue-green with the optical complexity of light filtering through volcanic-ringed water.

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.

#05b0a4
Original
#a6a5a4
Protanopia
#9297a5
Deuteranopia
#00b4ac
Tritanopia
#8b8b8b
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
2.71:1
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
7.75:1

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Canvas