Color
#81cf9d
#81cf9drgb(129, 207, 157)hsl(142, 45%, 66%)oklch(0.79 0.106 155.1)Colors that go with #81cf9d
Charcoal, Plum 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 #81cf9d: softer than #000 and cool enough to feel like part of the same palette.
Plum #dda0dd
complementaryshippedPlum sits directly opposite #81cf9d 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 Uber's brand system put Blue beside #81cf9d, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #81cf9d in 4 real palettes, including Tiffany & Co.'s brand system and Frost & Ember, as the supporting colour.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #81cf9d in 4 real palettes, including Forest Floor and Undergrowth, as the supporting colour.
Hunter Green #355e3b
shippedHunter Green is paired with #81cf9d in 4 real palettes, including Canopy and Neon's brand system, as the lead colour.
Mustard Yellow #ffdb58
shipped4 real palettes, including Fresh Juice and Crayon Box put Mustard Yellow beside #81cf9d, as the supporting colour.
Slate Gray #708090
shipped9 real palettes, including Ledger Dark and Still Water put Slate Gray beside #81cf9d, as the supporting colour.
Real palettes that use #81cf9d
Tints & shades
Harmonies
Contrast
| #81cf9d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.85:1 | fail | fail | fail | |
Aaon black | 11.35:1 | 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 #81cf9d 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 #81cf9d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/81cf9d-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