Color
#3fab9b
#3fab9brgb(63, 171, 155)hsl(171, 46%, 46%)oklch(0.675 0.101 181.6)Colors that go with #3fab9b
Charcoal, Copper and Dark Olive Green 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 #3fab9b: softer than #000 and cool enough to feel like part of the same palette.
Copper #b87333
shippedCopper is paired with #3fab9b in 5 real palettes, including Clean Beauty and Dusk, as the accent — a combination designers have actually shipped, not a computed rotation.
Dark Olive Green #556b2f
shippedDark Olive Green is paired with #3fab9b in 4 real palettes, including Undergrowth and Forest Floor, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #3fab9b in 7 real palettes, including Ford's brand system and Fintech Trust, as the accent — a combination designers have actually shipped, not a computed rotation.
Powder Blue #b0e0e6
shippedPowder Blue is paired with #3fab9b in 4 real palettes, including Ink Wash and First Snow, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Royal Blue #4169e1
shippedRoyal Blue is paired with #3fab9b in 7 real palettes, including Khan Academy's brand system and Brilliant's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Slate Gray #708090
shippedSlate Gray is paired with #3fab9b in 4 real palettes, including Indigo SaaS and Graphite, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Pale Violet Red #db7093
complementaryPale Violet Red sits directly opposite #3fab9b 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 #3fab9b
Tints & shades
Harmonies
Contrast
| #3fab9b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.8:1 | fail | fail | fail | |
Aaon black | 7.51:1 | 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 #3fab9b as the background.
Brands using this color
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 #3fab9b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3fab9b-a2bebd-d459a7-1f292d-e9f1ec?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