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Truthful Persian

#288a6e
Notes

Truthful Persian (#288A6E) is a true teal with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (163°, 55%, 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
#288a6e
RGB
rgb(40, 138, 110)
HSL
hsl(163, 55%, 35%)
HWB
hwb(163 16% 46%)
OKLCH
oklch(57.0% 0.100 169.7)
P3
color(display-p3 0.2775 0.5336 0.4376)
HSV
hsv(163, 71%, 54%)
LAB
lab(51.56% -35.06 6.94)
LCH
lch(51.56% 35.74 168.81)
CMYK
cmyk(71%, 0%, 20%, 46%)

Etymology

Truthful
adjective

Old English trēowth, truth — adjectival suffix -ful. As a color modifier, truthful implies a clear-and-honest-and-direct quality where the hue carries the visual register of accurate-and-faithful-representation declaration. Sits at the crisp-and-honest end of the grid, parallel to candid and honest in usage.

Persian
noun

The blue-green of glazed Persian tile and ceramic — the firuze (turquoise) palette that frames Iranian architecture from Isfahan's Shah Mosque to the courtyard fountains of Yazd. The color refers to a polished Persian-tile color sample: a saturated, slightly muted blue-green with the high shine of fired glaze. Cooler than turquoise, warmer than cerulean, with the Islamic-architectural weight of a thousand-year tile tradition.

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.

#288a6e
Original
#86816d
Protanopia
#797770
Deuteranopia
#008b82
Tritanopia
#737373
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).
AA Largeon White
4.24:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
4.95:1

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
##288A6E
Display P3
Display P3
color(display-p3 0.2775 0.5336 0.4376)
P3 has subtle headroomOKLCH chroma 0.100

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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