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Ironed Tourmaline

#256c65
Notes

Ironed Tourmaline (#256C65) is a deep 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 (174°, 49%, 28%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. 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
#256c65
RGB
rgb(37, 108, 101)
HSL
hsl(174, 49%, 28%)
HWB
hwb(174 15% 58%)
OKLCH
oklch(48.5% 0.071 186.0)
P3
color(display-p3 0.2261 0.4177 0.3954)
HSV
hsv(174, 66%, 42%)
LAB
lab(41.31% -23.65 -2.60)
LCH
lch(41.31% 23.79 186.26)
CMYK
cmyk(66%, 0%, 6%, 58%)

Etymology

Ironed
adjective

Old English īsern, iron — past-participle of iron. As a color modifier, ironed implies a clear-and-smoothed-and-pressed quality, the crisp color of Mid-Century-Modern freshly-ironed-shirt-and-trouser dress-attire textile finish. Sits at the crisp-and-finished end of the grid, parallel to pressed and starched in usage.

Tourmaline
noun

A boron silicate mineral that crystallizes in nearly every color depending on its trace elements — green tourmaline (verdelite) is the chromium and vanadium-bearing variety, mined principally in Brazil, Madagascar, and Maine. The color refers to a faceted green tourmaline: a saturated, slightly muted blue-green with the high refractive index of a quality cut gem. Cooler than emerald, warmer than aquamarine.

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.

#256c65
Original
#666665
Protanopia
#5c5e66
Deuteranopia
#006e6a
Tritanopia
#5c5c5c
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
6.16:1
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
3.41:1

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
##256C65
Display P3
Display P3
color(display-p3 0.2261 0.4177 0.3954)
Inside sRGBOKLCH chroma 0.071

This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.

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