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Sterile Bard Teal

#27b29a
Notes

Sterile Bard Teal (#27B29A) is a true teal 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 (170°, 64%, 43%) 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
#27b29a
RGB
rgb(39, 178, 154)
HSL
hsl(170, 64%, 43%)
HWB
hwb(170 15% 30%)
OKLCH
oklch(68.7% 0.118 177.7)
P3
color(display-p3 0.3419 0.6880 0.6070)
HSV
hsv(170, 78%, 70%)
LAB
lab(65.44% -41.32 2.04)
LCH
lch(65.44% 41.38 177.17)
CMYK
cmyk(78%, 0%, 13%, 30%)

Etymology

Sterile
adjective

Latin sterilis, barren / not-fertile — sharing root with Greek steiros (barren). As a color modifier, sterile implies a clear-and-medical-clean-and-stripped quality, the crisp color of operating-theater surgical-environment white-and-stainless-steel surfaces. Sits at the crisp-and-clean end of the grid, parallel to sanitary and hygienic in usage.

Bard
modifier

Welsh bardd, poet. As a color modifier, bard implies a Welsh-and-Irish-poet-and-storyteller quality, the visual register of Welsh-Eisteddfod-and-Irish-Bardic hand-spoken poet-and-harp-and-eisteddfod oral-tradition Celtic-bardic surfaces under Welsh-Eisteddfod-and-Irish-Bardic hand-spoken-poet-and-harp oral-tradition Celtic-bardic gathering light. Sits at the modifier-and-cultural end of the grid, parallel to druid and celtic in usage.

Teal
noun

Anas crecca, the small dabbling duck whose male in breeding plumage sports a chestnut head crossed by a glossy green-blue stripe. The color refers to that stripe — the iridescent panel just behind the eye: a saturated, slightly muted blue-green with the optical depth of structural color rather than pigment. Cooler than cypress, warmer than cerulean, with the ornithological specificity of a color named for one feather of one bird.

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.

#27b29a
Original
#aba799
Protanopia
#99999c
Deuteranopia
#00b5ab
Tritanopia
#939393
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
2.65:1
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
7.92:1

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
##27B29A
Display P3
Display P3
color(display-p3 0.3419 0.6880 0.6070)
P3 has subtle headroomOKLCH chroma 0.118

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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