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Heavy Bergamot Tanzanite

#27309a
Notes

Heavy Bergamot Tanzanite (#27309A) is a true blue 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 (235°, 60%, 38%) 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 yellow. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#27309a
RGB
rgb(39, 48, 154)
HSL
hsl(235, 60%, 38%)
HWB
hwb(235 15% 40%)
OKLCH
oklch(37.9% 0.170 271.5)
P3
color(display-p3 0.1598 0.1872 0.5809)
HSV
hsv(235, 75%, 60%)
LAB
lab(26.38% 33.89 -58.64)
LCH
lch(26.38% 67.73 300.03)
CMYK
cmyk(75%, 69%, 0%, 40%)

Etymology

Heavy
adjective

Old English hefig, weighty — cognate with heave. Used as a color modifier since at least the seventeenth century to indicate weight in saturation as much as value: heavy with pigment, heavy-bodied. In the engine's adjective grid, heavy sits alongside deep and plush in the dark-and-saturated quadrant. Closer to a fabric description than a pure value word.

Bergamot
modifier

Italian bergamotta, Calabrian-citrus-and-Earl-Grey-tea. As a color modifier, bergamot implies a Calabrian-citrus-and-Earl-Grey-tea quality, the visual register of Calabrian-bergamot-and-Earl-Grey-tea hand-Calabrian-citrus-and-Earl-Grey-tea Calabrian-bergamot-and-Earl-Grey-tea-and-Reggio-di-Calabria bergamot-and-Calabrian-citrus surfaces under Calabrian-bergamot-and-Earl-Grey-tea-and-Reggio-di-Calabria Reggio-di-Calabria-and-Twinings-Earl-Grey Calabrian-and-tea-light. Sits at the modifier-and-flavor end of the grid, parallel to zest and balm in usage.

Tanzanite
noun

A blue-violet variety of zoisite — discovered in 1967 in a single small area of northern Tanzania near Mount Kilimanjaro and marketed by Tiffany & Co. shortly after. The color refers to a faceted tanzanite cut to maximize its strong pleochroism: a saturated, slightly violet-shifted deep blue-purple with the gem's signature internal life. Cooler than amethyst, warmer than iolite, with the gem-trade specificity of a stone that occurs in exactly one place on Earth.

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.

#27309a
Original
#00449d
Protanopia
#003998
Deuteranopia
#004d61
Tritanopia
#363636
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).
AAAon White
10.63:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
1.98:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##27309A
Display P3
Display P3
color(display-p3 0.1598 0.1872 0.5809)
P3 has subtle headroomOKLCH chroma 0.170

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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