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Practical Pater Teal

#09c0ab
Notes

Practical Pater Teal (#09C0AB) 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 (173°, 91%, 39%) 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
#09c0ab
RGB
rgb(9, 192, 171)
HSL
hsl(173, 91%, 39%)
HWB
hwb(173 4% 25%)
OKLCH
oklch(72.5% 0.129 181.2)
P3
color(display-p3 0.3421 0.7417 0.6719)
HSV
hsv(173, 95%, 75%)
LAB
lab(69.96% -44.67 -0.75)
LCH
lch(69.96% 44.67 180.97)
CMYK
cmyk(95%, 0%, 11%, 25%)

Etymology

Practical
adjective

Greek praktikós, practical — adjectival suffix -al. As a color modifier, practical implies a clear-and-purpose-fit-and-everyday quality where the hue carries the visual register of Shaker-and-Quaker utilitarian-and-functional everyday-life craft. Sits at the crisp-and-functional end of the grid, parallel to functional and workmanlike in usage.

Pater
modifier

Latin pater, father. As a color modifier, pater implies a Latin-father-and-paterfamilias-and-Pater-Noster quality, the visual register of Pater-Noster-and-Roman-paterfamilias hand-Latin-father-and-paterfamilias-and-Pater-Noster Pater-Noster-and-Roman-paterfamilias-and-Catholic-prayer pater-and-Latin-father surfaces under Pater-Noster-and-Roman-paterfamilias-and-Catholic-prayer Roman-Senate-and-Catholic-liturgy paterfamilias-light. Sits at the modifier-and-Latin end of the grid, parallel to mater and dux 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.

#09c0ab
Original
#b7b4aa
Protanopia
#a2a5ad
Deuteranopia
#00c4ba
Tritanopia
#989898
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
2.30:1
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
9.14:1

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
##09C0AB
Display P3
Display P3
color(display-p3 0.3421 0.7417 0.6719)
P3 has subtle headroomOKLCH chroma 0.129

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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