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Fortified Sunbird

#64922b
Notes

Fortified Sunbird (#64922B) is a true lime 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 (87°, 54%, 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
#64922b
RGB
rgb(100, 146, 43)
HSL
hsl(87, 54%, 37%)
HWB
hwb(87 17% 43%)
OKLCH
oklch(60.6% 0.141 130.5)
HSV
hsv(87, 71%, 57%)
LAB
lab(55.52% -32.39 47.34)
LCH
lch(55.52% 57.36 124.37)
CMYK
cmyk(32%, 0%, 71%, 43%)

Etymology

Fortified
adjective

Latin fortificāre, to make strong — past-participle of fortify. As a color modifier, fortified implies a saturated-and-strengthened-and-defensive quality, the deep-rich color of Vauban-style military-fortification stone-and-earth rampart-and-bastion architecture. Sits at the bold-and-fortified end of the grid, parallel to bastioned and armored.

Sunbird
noun

The family Nectariniidae — Old World sunbirds, the ecological equivalent of New World hummingbirds. Particularly Cinnyris jugularis (olive-backed sunbird) whose iridescent green throat catches direct sunlight. The color refers to a male sunbird's gorget: a saturated, slightly cool deep green with the iridescent satin finish of structural color.

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.

#64922b
Original
#99871b
Protanopia
#928434
Deuteranopia
#668c7d
Tritanopia
#818181
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
3.69:1
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
5.69:1

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