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Stalwart Yomogi

#5b8b01
Notes

Stalwart Yomogi (#5B8B01) 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 (81°, 99%, 27%) 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
#5b8b01
RGB
rgb(91, 139, 1)
HSL
hsl(81, 99%, 27%)
HWB
hwb(81 0% 45%)
OKLCH
oklch(58.0% 0.155 129.8)
HSV
hsv(81, 99%, 55%)
LAB
lab(52.61% -34.52 55.88)
LCH
lch(52.61% 65.68 121.70)
CMYK
cmyk(35%, 0%, 99%, 45%)

Etymology

Stalwart
adjective

Old English stǣl-wyrðe, stable-and-worthy. As a color modifier, stalwart implies a saturated-and-loyal-and-firm quality where the hue carries the dependable-and-trustworthy visual presence of a Knight-Templar guard. Sits at the bold-and-firm end of the grid, parallel to steadfast and firm in usage.

Yomogi
noun

Artemisia indica, Japanese mugwort — used in yomogi-mochi (mugwort rice cakes) and as a traditional moxibustion herb. Yomogi-iro refers to the slightly muted yellow-green of fresh mugwort leaves: a soft, slightly muted yellow-green with the matte finish of pubescent leaf surface. Drier than wakaba.

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.

#5b8b01
Original
#928000
Protanopia
#8c7c1a
Deuteranopia
#5e8475
Tritanopia
#777777
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
4.09:1
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
5.14:1

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