Color
#a3d303
#a3d303rgb(163, 211, 3)hsl(74, 97%, 42%)oklch(0.803 0.2 124.5)Colors that go with #a3d303
Taupe, Plum and Charcoal lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Taupe #483c32
shippedTaupe is paired with #a3d303 in 7 real palettes, including Citrus Grove and Acer's brand system, as the text colour against it.
Plum #dda0dd
complementaryPlum sits directly opposite #a3d303 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #a3d303: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Dark Orange #ff8c00
shippedDark Orange shows up next to #a3d303 in 3 real palettes, including Citrus Grove and Learning App, as the lead colour.
Deep Sky Blue #00bfff
triadicshippedDeep Sky Blue completes a triad with #a3d303 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Red #ff0000
shippedRed is paired with #a3d303 in 3 real palettes, including Wise's brand system and Gatorade's brand system, as the lead colour.
Light Coral #f08080
triadicshippedLight Coral completes a triad with #a3d303 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Violet #ee82ee
split-complementViolet is a split-complement of #a3d303: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #a3d303
Tints & shades
Harmonies
Contrast
| #a3d303 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.77:1 | fail | fail | fail | |
Aaon black | 11.88:1 | pass | pass | pass | Passes AAA — no fix needed. |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a3d303 as the background.
Brands using this color
Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #a3d303 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/a3d303-b4bea2-4e72df-242d1f-f1efe9?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md