Ledger Dark
Open in tool →Gold on midnight is the private-banking cue; the mint accent keeps it from feeling old-money stuffy.
Color
#40ce98rgb(64, 206, 152)hsl(157, 59%, 53%)oklch(0.763 0.144 163.4)Charcoal, Hot Pink and Deep Sky 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 is the text near-black for #40ce98: softer than #000 and cool enough to feel like part of the same palette.
Hot Pink sits directly opposite #40ce98 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Designers have shipped Deep Sky Blue with #40ce98: 4 real palettes, including Remix's brand system and Prime Video's brand system, as the lead colour.
4 real palettes, including Fresh Juice and Crayon Box put Mustard Yellow beside #40ce98, as the supporting colour.
Royal Blue is paired with #40ce98 in 4 real palettes, including Docker's brand system and Khan Academy's brand system, as the supporting colour.
Taupe is paired with #40ce98 in 16 real palettes, including Chime's brand system and WhatsApp's brand system, as the lead colour.
Light Coral is a split-complement of #40ce98: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Burlywood is paired with #40ce98 in 3 real palettes, including Polaroid and Chalkboard, as the accent.
| #40ce98 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2:1 | fail | fail | fail | |
Aaon black | 10.5:1 | 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 #40ce98 as the background.
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 #40ce98 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/40ce98-a2beb7-d459c4-1f2c2d-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