Fintech Trust
Open in tool →Navy signals custody and stability; the green accent is money moving the right way. No red anywhere except errors.
Color
#18a57f
#18a57f
hex
#18a57frgb
rgb(24, 165, 127)hsl
hsl(164, 75%, 37%)oklch
oklch(0.644 0.125 168.3)Closest name: Cosmic Green (#30a877)Relative luminance 0.2864
Colors that go with #18a57f
Charcoal, Crimson and Denim 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 #18a57f: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
shippedCrimson is paired with #18a57f in 6 real palettes, including Diner and DuckDuckGo's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #18a57f: 5 real palettes, including Peacock and Intel's brand system, as the supporting colour.
Midnight Blue #191970
shipped7 real palettes, including Fintech Trust and Tide Pool put Midnight Blue beside #18a57f, as the text colour against it.
Royal Blue #4169e1
shippedRoyal Blue is paired with #18a57f in 7 real palettes, including Khan Academy's brand system and Console Light, as the accent.
Taupe #483c32
shippedTaupe is paired with #18a57f in 11 real palettes, including Undergrowth and Rain Garden, as the surface under it.
Deep Pink #ff1493
complementaryDeep Pink sits directly opposite #18a57f on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Red #ff0000
split-complementshippedRed is a split-complement of #18a57f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #18a57f
Tints & shades
Harmonies
Contrast
| #18a57f as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.12:1 | fail | pass | fail | |
Aaon black | 6.73:1 | pass | pass | fail |
|
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #18a57f as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
mcpConnect your agent — build around #18a57f
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 #18a57f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/18a57f-a2beba-d459b5-1f2b2d-e9f1eb?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