Terminal
Open in tool →Green for success, blue for links, pink for emphasis — the dark-mode developer family, tuned to sit on near-black without glare.
Color
#40bf57
#40bf57
hex
#40bf57rgb
rgb(64, 191, 87)hsl
hsl(131, 50%, 50%)oklch
oklch(0.712 0.182 146.5)Closest name: Intoxicate (#11bb55)Relative luminance 0.3904
Colors that go with #40bf57
Charcoal, Taupe and Orchid 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.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #40bf57: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Taupe #483c32
shippedTaupe is paired with #40bf57 in 6 real palettes, including Obsidian's brand system and Meadow, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Orchid #da70d6
complementaryOrchid sits directly opposite #40bf57 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 #40bf57: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Cornflower Blue #6495ed
triadicshippedCornflower Blue completes a triad with #40bf57 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Dark Olive Green #556b2f
shippedDark Olive Green is paired with #40bf57 in 3 real palettes, including Undergrowth and Forest Floor, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Dark Orange #ff8c00
shippedDark Orange is paired with #40bf57 in 3 real palettes, including Playground and Citrus Grove, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Dodger Blue #1e90ff
shippedDodger Blue is paired with #40bf57 in 3 real palettes, including Playground and Unity's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #40bf57
Tints & shades
Harmonies
Contrast
| #40bf57 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.38:1 | fail | fail | fail | |
Aaon black | 8.81:1 | 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 #40bf57 as the background.
Brands using this color
Palettes built around it
mcpConnect your agent — build around #40bf57
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 #40bf57 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/40bf57-a2beaa-b34edf-1f2d28-ecf1e9?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