Electric Lime
Open in tool →One neon on white with black type — lime-and-black is the neon that works in daylight; the orange is a second gear.
Color
#befd21
#befd21
hex
#befd21rgb
rgb(190, 253, 33)hsl
hsl(77, 98%, 56%)oklch
oklch(0.918 0.228 126.1)Closest name: Atomic Lime (#b9ff03)Relative luminance 0.8131
Colors that go with #befd21
Plum, Violet 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.
Plum #dda0dd
complementaryPlum sits directly opposite #befd21 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Violet #ee82ee
split-complementshippedViolet is a split-complement of #befd21: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #befd21: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Crimson #dc143c
shippedCrimson is paired with #befd21 in 3 real palettes, including Ferrari's brand system and Wise's brand system, as the lead colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #befd21: 3 real palettes, including JetBrains's brand system and Star Wars's brand system, as the supporting colour.
Gold #ffd700
shippedGold shows up next to #befd21 in 3 real palettes, including Ikea's brand system and Paddle's brand system, as the supporting colour.
Red #ff0000
shippedRed is paired with #befd21 in 3 real palettes, including Heineken's brand system and Wise's brand system, as the accent.
Taupe #483c32
shippedTaupe is paired with #befd21 in 3 real palettes, including Calvin Klein's brand system and Tommy Hilfiger's brand system, as the lead colour.
Real palettes that use #befd21
Tints & shades
Harmonies
Contrast
| #befd21 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.22:1 | fail | fail | fail | |
Aaon black | 17.26:1 | 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 #befd21 as the background.
Brands using this color
Palettes built around it
mcpConnect your agent — build around #befd21
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #befd21 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/befd21-b3bea2-4e6bdf-232d1f-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