Color
#51c898
#51c898rgb(81, 200, 152)hsl(156, 52%, 55%)oklch(0.752 0.129 163.6)Colors that go with #51c898
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 #51c898: softer than #000 and cool enough to feel like part of the same palette.
Hot Pink #ff69b4
complementaryshippedHot Pink sits directly opposite #51c898 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped5 real palettes, including Unity's brand system and Canva's brand system put Blue beside #51c898, as the supporting colour.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #51c898 in 4 real palettes, including Undergrowth and Forest Floor, as the supporting colour.
Mustard Yellow #ffdb58
shipped4 real palettes, including Fresh Juice and Crayon Box put Mustard Yellow beside #51c898, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #51c898 in 21 real palettes, including Chime's brand system and Crayon Box, as the lead colour.
Wheat #f5deb3
shippedDesigners have shipped Wheat with #51c898: 4 real palettes, including Resort and Pine & Birch, as the accent.
Light Coral #f08080
split-complementshippedLight Coral is a split-complement of #51c898: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #51c898
Tints & shades
Harmonies
Contrast
| #51c898 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.09:1 | fail | fail | fail | |
Aaon black | 10.06:1 | 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 #51c898 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 #51c898 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/51c898-a2beb6-d459c6-1f2d2d-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