Arcade
Open in tool →Hot pink, cyan and acid yellow on near-black — cabinet-glow neon; the black surface is what makes the colours light up.
Color
#ecff1f
#ecff1f
hex
#ecff1frgb
rgb(236, 255, 31)hsl
hsl(65, 100%, 56%)oklch
oklch(0.954 0.212 115.2)Closest name: Banana Flash (#eefe02)Relative luminance 0.8945
Colors that go with #ecff1f
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.
Blue #0000ff
shipped4 real palettes, including Snapchat's brand system and Robinhood's brand system put Blue beside #ecff1f, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #ecff1f in 4 real palettes, including Calvin Klein's brand system and Tommy Hilfiger's brand system, as the lead colour.
Violet #ee82ee
split-complementshippedViolet is a split-complement of #ecff1f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Plum #dda0dd
complementaryPlum sits directly opposite #ecff1f 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 #ecff1f: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Crimson #dc143c
shippedCrimson is paired with #ecff1f in 3 real palettes, including Ferrari's brand system and Lay's's brand system, as the lead colour.
Deep Pink #ff1493
shipped3 real palettes, including Arcade and JetBrains's brand system put Deep Pink beside #ecff1f, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #ecff1f: 3 real palettes, including Ikea's brand system and FIFA's brand system, as the accent.
Real palettes that use #ecff1f
Tints & shades
Harmonies
Contrast
| #ecff1f as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.11:1 | fail | fail | fail | |
Aaon black | 18.89:1 | 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 #ecff1f as the background.
Brands using this color
Palettes built around it
mcpConnect your agent — build around #ecff1f
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 #ecff1f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/ecff1f-b8bea2-4e88df-262d1f-f1eee9?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