Color
#31e421
#31e421rgb(49, 228, 33)hsl(115, 78%, 51%)oklch(0.801 0.259 142)Colors that go with #31e421
Deep Sky Blue, Taupe and Violet 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.
Deep Sky Blue #00bfff
triadicshippedDeep Sky Blue completes a triad with #31e421 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Taupe #483c32
shippedTaupe is paired with #31e421 in 5 real palettes, including 7-Eleven's brand system and WhatsApp's brand system, as the lead colour.
Violet #ee82ee
complementaryViolet sits directly opposite #31e421 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Dark Orange #ff8c00
shippedDark Orange shows up next to #31e421 in 3 real palettes, including Learning App and Playground, as the accent.
Light Coral #f08080
triadicshippedLight Coral completes a triad with #31e421 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Hot Pink #ff69b4
split-complementHot Pink is a split-complement of #31e421: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Charcoal #36454f
neutralCharcoal is the body-text near-black for #31e421: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Mustard Yellow #ffdb58
shippedTwo real palettes: Meadow and Citrus Grove put Mustard Yellow beside #31e421, as the supporting colour.
Real palettes that use #31e421
Tints & shades
Harmonies
Contrast
| #31e421 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.71:1 | fail | fail | fail | |
Aaon black | 12.25:1 | 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 #31e421 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
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 #31e421 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/31e421-a2bea3-8d4edf-1f2d24-eef1e9?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