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Devout Ardennes

#639f06
Notes

Devout Ardennes (#639F06) is a deep lime 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 (84°, 93%, 32%) places it in the highly saturated band at a dark 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 indigo. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#639f06
RGB
rgb(99, 159, 6)
HSL
hsl(84, 93%, 32%)
HWB
hwb(84 2% 38%)
OKLCH
oklch(63.7% 0.173 131.4)
HSV
hsv(84, 96%, 62%)
LAB
lab(59.40% -40.13 60.61)
LCH
lch(59.40% 72.69 123.51)
CMYK
cmyk(38%, 0%, 96%, 38%)

Etymology

Devout
adjective

From the Latin devotus, consecrated — used principally in religious contexts for the dignified deep colors of sacred art and ecclesiastical dress. As a color modifier, devout implies saturation combined with restraint: the deep blues of Marian mantles, the deep reds of cardinals' robes. Sits in the bold-and-formal corner alongside imperial.

Ardennes
noun

The forested region of northern France, southern Belgium, and Luxembourg — and the deep green of Ardennes forest cover and the underbrush of pre-WWII military maneuvers. Ardennes color refers to a Belgian Ardennes forest understory: a saturated, slightly muted deep yellow-green with the matte finish of fern-and-moss-covered floor.

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.

#639f06
Original
#a69200
Protanopia
#9e8d21
Deuteranopia
#659887
Tritanopia
#878787
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
3.23:1
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
6.49:1

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