Color
#40b56b
#40b56brgb(64, 181, 107)hsl(142, 48%, 48%)oklch(0.689 0.151 152.2)Colors that go with #40b56b
Charcoal, Mustard Yellow and Royal 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 #40b56b: softer than #000 and cool enough to feel like part of the same palette.
Mustard Yellow #ffdb58
shipped4 real palettes, including Meadow and Citrus Grove put Mustard Yellow beside #40b56b, as the supporting colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #40b56b in 5 real palettes, including Khan Academy's brand system and Console Light, as the accent.
Taupe #483c32
shippedTaupe is paired with #40b56b in 13 real palettes, including Chime's brand system and Obsidian's brand system, as the lead colour.
Fuchsia #ff00ff
complementaryFuchsia sits directly opposite #40b56b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Medium Purple #9370db
split-complementshippedMedium Purple is a split-complement of #40b56b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Blue #0000ff
shipped3 real palettes, including Unity's brand system and Spotify's brand system put Blue beside #40b56b, as the supporting colour.
Cornflower Blue #6495ed
triadicshippedCornflower Blue completes a triad with #40b56b — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Real palettes that use #40b56b
Tints & shades
Harmonies
Contrast
| #40b56b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.61:1 | fail | fail | fail | |
Aaon black | 8.04:1 | 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 #40b56b 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 #40b56b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/40b56b-a2beaf-c659d4-1f2d2a-eaf1e9?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