Color
#b4ff05
#b4ff05rgb(180, 255, 5)hsl(78, 100%, 51%)oklch(0.916 0.239 128.1)Colors that go with #b4ff05
Violet, Charcoal and Blue 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 #b4ff05 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 #b4ff05: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Blue #0000ff
shippedTwo real palettes: Robinhood's brand system and Snapchat's brand system put Blue beside #b4ff05, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #b4ff05 in two real palettes: Wise's brand system and Ferrari's brand system, as the accent.
Deep Pink #ff1493
shippedTwo real palettes: Arcade and JetBrains's brand system put Deep Pink beside #b4ff05, as the lead colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #b4ff05: two real palettes: JetBrains's brand system and Star Wars's brand system, as the supporting colour.
Lime Green #32cd32
shippedTwo real palettes: Duolingo's brand system and Monster Energy's brand system put Lime Green beside #b4ff05, as the lead colour.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #b4ff05 in two real palettes: Klaviyo's brand system and Heineken's brand system, as the accent.
Real palettes that use #b4ff05
Tints & shades
Harmonies
Contrast
| #b4ff05 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.22:1 | fail | fail | fail | |
Aaon black | 17.25:1 | 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 #b4ff05 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 #b4ff05 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/b4ff05-b2bea2-4e69df-232d1f-f1f0e9?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