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Acid Bog Kiwi

#63ba28
Notes

Acid Bog Kiwi (#63BA28) is a true lime with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (96°, 65%, 44%) 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
#63ba28
RGB
rgb(99, 186, 40)
HSL
hsl(96, 65%, 44%)
HWB
hwb(96 16% 27%)
OKLCH
oklch(70.7% 0.194 136.0)
P3
color(display-p3 0.4729 0.7213 0.2648)
HSV
hsv(96, 78%, 73%)
LAB
lab(67.96% -49.94 60.61)
LCH
lch(67.96% 78.54 129.49)
CMYK
cmyk(47%, 0%, 78%, 27%)

Etymology

Acid
adjective

Latin acidus, sour — sharing root with English acrid and acerbic. As a color modifier, acid implies a saturated-and-citric-and-zingy quality, the bright color of lemon-and-lime citrus-fruit-flesh and acid-yellow fluorescent-pigment surfaces. Sits at the bright-and-cool end of the grid, parallel to acidic and electric in usage.

Bog
modifier

Irish bog, soft-and-wet. As a color modifier, bog implies a peat-soaked-and-soft quality, the visual register of Connemara-and-Yorkshire-Moors peat-bog blanket-bog-and-cotton-grass wet-and-sphagnum-moss surfaces under wet West-of-Ireland atmospheric overcast. Sits at the modifier-and-place end of the grid, parallel to fen and moor in usage.

Kiwi
noun

Actinidia deliciosa — originally the Chinese gooseberry before New Zealand growers rebranded it for export in the 1950s. The color refers to the cross-section of a ripe green-fleshed kiwifruit: a saturated, slightly yellow-shifted green with the optical brightness of small black seeds suspended in translucent flesh. Brighter than apple, sharper than pear, with the instantly recognizable graphic quality of the cut fruit.

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.

#63ba28
Original
#c1aa00
Protanopia
#b5a338
Deuteranopia
#5fb39f
Tritanopia
#9d9d9d
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
2.45:1
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
8.58:1

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
##63BA28
Display P3
Display P3
color(display-p3 0.4729 0.7213 0.2648)
P3 has visible headroomOKLCH chroma 0.194

This color is chromatic enough that authoring it as P3 native (instead of clamping to sRGB) gives a perceptibly more saturated render on wide-gamut displays — modern Macs, iPhones, iPads, and most recent OLED laptops.

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