CSS named color
Turquoise #40E0D0
Turquoise is cyan. Below: every color format, WCAG contrast against black and white, its tints, shades and tones, and the harmonies that pair with it.
Color values
Contrast & accessibility
WCAG contrast ratio of Turquoise used as a foreground on white and black backgrounds.
On white
On black
Tints, shades & tones
Systematic variations of Turquoise — click any swatch to copy its hex.
Simulated colour vision
How Turquoise reads under the four common colour-vision deficiencies, using the standard Machado (2009) matrices at full severity. A simulation, not a measurement of any one person's vision; the point is whether this colour still does its job when hue drops out.
#40E0D0Tailwind-style ramp
Eleven steps from 50 to 950 with the hue and saturation of Turquoise held and only lightness stepped. Computed, not curated: the 500 step sits closest to the source, which is where Tailwind puts a brand colour.
Color harmonies
Palettes built from Turquoise by rotating its hue. Each swatch links to its closest named color.
Complementary
Split-complementary
Use Turquoise in your stack
Tailwind (arbitrary value)
Works for any property: text-[#40e0d0], border-[#40e0d0].
CSS custom property
Reference it anywhere with var(--color).
Build a full theme
Turn Turquoise into a complete shadcn/ui palette — light & dark, contrast-checked, one-command install.
Extract a theme →Palettes near Turquoise
Curated palettes with a role within ΔE 12 of this colour, close enough to read as the same family. Each one is also an installable shadcn/ui theme with measured contrast.