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Resonant Moegi

#63a31b
Notes

Resonant Moegi (#63A31B) is a true 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 (88°, 72%, 37%) 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 indigo. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#63a31b
RGB
rgb(99, 163, 27)
HSL
hsl(88, 72%, 37%)
HWB
hwb(88 11% 36%)
OKLCH
oklch(64.8% 0.172 132.7)
P3
color(display-p3 0.4463 0.6328 0.2169)
HSV
hsv(88, 83%, 64%)
LAB
lab(60.72% -41.22 57.68)
LCH
lch(60.72% 70.89 125.55)
CMYK
cmyk(39%, 0%, 83%, 36%)

Etymology

Resonant
adjective

Latin resonāns, echoing — present-participle of resonate, sharing root with sonance. As a color modifier, resonant implies a saturated-and-deep-vibrating quality where the hue carries low-frequency visual richness. Sits at the bold-and-resonant end of the grid, parallel to sonorous and resounding in usage.

Moegi
noun

Japanese for sprouting yellow — the yellow-green of Carex sedge sprouts and rice seedlings. Moegi-iro is one of the seasonal colors of the Heian-period kasane layered-kimono palette, worn during the spring planting season. The color refers to fresh moegi sprouts in a paddy: a saturated, slightly yellow yellow-green with the matte finish of small fresh 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

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.

#63a31b
Original
#aa9600
Protanopia
#a1912c
Deuteranopia
#649c8b
Tritanopia
#8c8c8c
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
3.09:1
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
6.79:1

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
##63A31B
Display P3
Display P3
color(display-p3 0.4463 0.6328 0.2169)
P3 has subtle headroomOKLCH chroma 0.172

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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