Color
#51a487
#51a487rgb(81, 164, 135)hsl(159, 34%, 48%)oklch(0.658 0.093 168.3)Colors that go with #51a487
Charcoal, Blue and Copper 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 #51a487: softer than #000 and cool enough to feel like part of the same palette.
Blue #0000ff
shipped4 real palettes, including Unity's brand system and Spotify's brand system put Blue beside #51a487, as the supporting colour.
Copper #b87333
shippedDesigners have shipped Copper with #51a487: 6 real palettes, including Clean Beauty and Wellness, as the accent.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #51a487: 4 real palettes, including Arctic and Terminal, as the accent.
Crimson #dc143c
shippedCrimson is paired with #51a487 in 5 real palettes, including Diner and DuckDuckGo's brand system, as the lead colour.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #51a487 in 5 real palettes, including Undergrowth and Forest Floor, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #51a487: 7 real palettes, including Peacock and Open House, as the supporting colour.
Pale Violet Red #db7093
complementaryPale Violet Red sits directly opposite #51a487 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Real palettes that use #51a487
Tints & shades
Harmonies
Contrast
| #51a487 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3:1 | fail | fail | fail | |
Aaon black | 7.01:1 | 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 #51a487 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
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 #51a487 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/51a487-a2beb8-d459c0-1f2c2d-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