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Steadfast Bamboo

#307c19
Notes

Steadfast Bamboo (#307C19) is a deep green 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 (106°, 66%, 29%) 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
#307c19
RGB
rgb(48, 124, 25)
HSL
hsl(106, 66%, 29%)
HWB
hwb(106 10% 51%)
OKLCH
oklch(51.9% 0.151 139.7)
HSV
hsv(106, 80%, 49%)
LAB
lab(45.79% -41.85 43.66)
LCH
lch(45.79% 60.47 133.79)
CMYK
cmyk(61%, 0%, 80%, 51%)

Etymology

Steadfast
adjective

Old English stede-fæst, fixed in place — sharing root with German stetig. As a color modifier, steadfast implies a saturated-and-unwavering quality where the hue maintains its visual character without modulation. Sits at the bold-and-firm end of the grid, parallel to unwavering and firm in usage.

Bamboo
noun

The subfamily Bambusoideae — fast-growing tropical and temperate grasses essential to East Asian architecture, scaffolding, and cuisine. Bamboo color refers to fresh bamboo culms in a Kyoto garden: a saturated, slightly cool yellow-green with the satin finish of segmented culm. Cooler than yamabuki.

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.

#307c19
Original
#807001
Protanopia
#766a24
Deuteranopia
#277869
Tritanopia
#656565
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
5.22:1
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
4.02:1

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