Neobank
Open in tool →Purple-and-lime is the challenger-bank uniform — high energy, and clearly not a legacy bank.
Color
#99ec51
#99ec51
hex
#99ec51rgb
rgb(153, 236, 81)hsl
hsl(92, 80%, 62%)oklch
oklch(0.86 0.203 133.3)Closest name: Inchworm (#b2ec5d)Relative luminance 0.6736
Colors that go with #99ec51
Violet, Deep Sky Blue 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.
Violet #ee82ee
complementaryshippedViolet sits directly opposite #99ec51 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Deep Sky Blue #00bfff
triadicshippedDeep Sky Blue completes a triad with #99ec51 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #99ec51: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Taupe #483c32
shippedTaupe is paired with #99ec51 in 3 real palettes, including 7-Eleven's brand system and Citrus Grove, as the lead colour.
Hot Pink #ff69b4
split-complementHot Pink is a split-complement of #99ec51: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Lilac #c8a2c8
split-complementLilac is a split-complement of #99ec51: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Blue #0000ff
shippedTwo real palettes: MongoDB's brand system and Robinhood's brand system put Blue beside #99ec51, as the accent.
Dark Orange #ff8c00
shippedDark Orange shows up next to #99ec51 in two real palettes: Citrus Grove and Learning App, as the lead colour.
Real palettes that use #99ec51
Tints & shades
Harmonies
Contrast
| #99ec51 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.45:1 | fail | fail | fail | |
Aaon black | 14.47:1 | 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 #99ec51 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
mcpConnect your agent — build around #99ec51
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 #99ec51 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/99ec51-acbea2-564edf-202d1f-f1f1e9?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