Color
#40bf8a
#40bf8argb(64, 191, 138)hsl(155, 50%, 50%)oklch(0.721 0.136 161.7)Colors that go with #40bf8a
Charcoal, Hot Pink 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #40bf8a: softer than #000 and cool enough to feel like part of the same palette.
Hot Pink #ff69b4
complementaryshippedHot Pink sits directly opposite #40bf8a on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped4 real palettes, including Unity's brand system and Spotify's brand system put Blue beside #40bf8a, as the supporting colour.
Cornflower Blue #6495ed
triadicshippedCornflower Blue completes a triad with #40bf8a — 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 shows up next to #40bf8a in 4 real palettes, including Undergrowth and Forest Floor, as the supporting colour.
Midnight Blue #191970
shipped4 real palettes, including Fintech Trust and Telehealth put Midnight Blue beside #40bf8a, as the text colour against it.
Mustard Yellow #ffdb58
shipped5 real palettes, including Fresh Juice and Meadow put Mustard Yellow beside #40bf8a, as the supporting colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #40bf8a in 5 real palettes, including Khan Academy's brand system and Docker's brand system, as the accent.
Real palettes that use #40bf8a
Tints & shades
Harmonies
Contrast
| #40bf8a as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.32:1 | fail | fail | fail | |
Aaon black | 9.04:1 | 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 #40bf8a as the background.
Brands using this color
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 #40bf8a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/40bf8a-a2beb6-d459c8-1f2d2d-e9f1ea?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