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Spectral Bancha

#40c05f
Notes

Spectral Bancha (#40C05F) is a true green with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (135°, 50%, 50%) 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 magenta. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#40c05f
RGB
rgb(64, 192, 95)
HSL
hsl(135, 50%, 50%)
HWB
hwb(135 25% 25%)
OKLCH
oklch(71.6% 0.177 148.0)
HSV
hsv(135, 67%, 75%)
LAB
lab(69.19% -55.51 38.65)
LCH
lch(69.19% 67.64 145.15)
CMYK
cmyk(67%, 0%, 51%, 25%)

Etymology

Spectral
adjective

Latin spectrum, appearance — adjectival suffix -al. As a color modifier, spectral implies a saturated-and-rainbow-decomposed-and-pure quality, the bright color of Newton-prism sunlight-decomposed seven-color spectrum band. Sits at the bright-and-pure end of the grid, parallel to prismatic and pure in usage.

Bancha
noun

The Japanese green tea made from later-season Camellia sinensis leaves — milder than sencha, lower in caffeine, and traditionally drunk with meals across rural Japan. The color refers to fresh-brewed bancha: a soft, slightly cool deep blue-green with the optical clarity of late-season green-tea liquor.

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.

#40c05f
Original
#c2b057
Protanopia
#b2a566
Deuteranopia
#0bbcaa
Tritanopia
#9e9e9e
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).
Failon White
2.35:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
8.92:1

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