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Practical Yarn Ocean

#217b91
Notes

Practical Yarn Ocean (#217B91) 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 (192°, 63%, 35%) 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
#217b91
RGB
rgb(33, 123, 145)
HSL
hsl(192, 63%, 35%)
HWB
hwb(192 13% 43%)
OKLCH
oklch(54.2% 0.087 218.2)
HSV
hsv(192, 77%, 57%)
LAB
lab(47.66% -18.00 -19.35)
LCH
lch(47.66% 26.43 227.06)
CMYK
cmyk(77%, 15%, 0%, 43%)

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.

Yarn
modifier

Old English gearn, spun-thread. As a color modifier, yarn implies a hand-spun-thread-and-skein quality, the visual register of hand-spun-yarn-skein hand-spun-and-skeined wool-and-cotton-and-linen hand-spun-yarn-and-skein surfaces under hand-spun-and-skeined yarn-and-skein workshop-light. Sits at the modifier-and-texture end of the grid, parallel to spun and knit in usage.

Ocean
noun

The body of saltwater that covers seventy percent of Earth's surface — a single connected mass divided by convention into Atlantic, Pacific, Indian, Southern, and Arctic. The color refers to the average reflectance of mid-depth temperate ocean: a saturated, slightly green-shifted deep blue with the optical depth of a body of water that absorbs all light below the photic zone. Deeper than mediterranean, cooler than peacock.

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.

#217b91
Original
#6d7792
Protanopia
#5e6c91
Deuteranopia
#008282
Tritanopia
#696969
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).
AAon White
4.88:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
4.31:1

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