Color
#40c304
#40c304rgb(64, 195, 4)hsl(101, 96%, 39%)oklch(0.717 0.229 139.8)Colors that go with #40c304
Blue, Royal Blue and Taupe 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 Minecraft's brand system and Spotify's brand system put Blue beside #40c304, as the accent.
Royal Blue #4169e1
shippedRoyal Blue is paired with #40c304 in 4 real palettes, including Brilliant's brand system and Console Light, as the accent.
Taupe #483c32
shippedTaupe is paired with #40c304 in 9 real palettes, including Obsidian's brand system and Minecraft's brand system, as the text colour against it.
Orchid #da70d6
complementaryOrchid sits directly opposite #40c304 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Hot Pink #ff69b4
split-complementshippedHot Pink is a split-complement of #40c304: 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 #40c304: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Cornflower Blue #6495ed
split-complementshippedCornflower Blue is a split-complement of #40c304: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Dark Orange #ff8c00
shippedDark Orange shows up next to #40c304 in 3 real palettes, including Learning App and Playground, as the accent.
Real palettes that use #40c304
Tints & shades
Harmonies
Contrast
| #40c304 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.33:1 | fail | fail | fail | |
Aaon black | 9.03:1 | 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 #40c304 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 #40c304 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/40c304-a7bea2-6b4edf-1f2d21-eff1e9?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