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Cool Topiary

#1c641d
Notes

Cool Topiary (#1C641D) is a deep green 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 (121°, 56%, 25%) 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 violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#1c641d
RGB
rgb(28, 100, 29)
HSL
hsl(121, 56%, 25%)
HWB
hwb(121 11% 61%)
OKLCH
oklch(44.3% 0.126 143.3)
HSV
hsv(121, 72%, 39%)
LAB
lab(36.84% -37.23 32.71)
LCH
lch(36.84% 49.56 138.70)
CMYK
cmyk(72%, 0%, 71%, 61%)

Etymology

Cool
adjective

Old English cōl, of low temperature — used as a color modifier as the complement to warm. Cool gray, cool blue: the optical impression of a slight blue-green shift, even within otherwise warm or neutral hues. Sits across the crisp, hushed, pale, and neutral buckets.

Topiary
noun

The horticultural art of clipping shrubs into ornamental shapes — perfected in the parterres of Versailles and the formal gardens of seventeenth-century European estates. Topiary color refers to a freshly clipped boxwood topiary: a saturated, slightly cool deep green with the matte finish of densely packed clipped leaves.

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

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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.

#1c641d
Original
#665a13
Protanopia
#5e5424
Deuteranopia
#096155
Tritanopia
#505050
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).
AAAon White
7.27:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.89:1

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