Color
#3fab90
#3fab90rgb(63, 171, 144)hsl(165, 46%, 46%)oklch(0.672 0.107 173.4)Colors that go with #3fab90
Charcoal, Hot Pink 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 #3fab90: softer than #000 and cool enough to feel like part of the same palette.
Hot Pink #ff69b4
complementaryshippedHot Pink sits directly opposite #3fab90 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Copper #b87333
shippedDesigners have shipped Copper with #3fab90: 4 real palettes, including Clean Beauty and Wellness, as the accent.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #3fab90 in 4 real palettes, including Undergrowth and Forest Floor, as the supporting colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #3fab90: 4 real palettes, including Unity's brand system and Spline's brand system, as the lead colour.
Midnight Blue #191970
shipped7 real palettes, including Fintech Trust and Tide Pool put Midnight Blue beside #3fab90, as the text colour against it.
Mustard Yellow #ffdb58
shipped5 real palettes, including Diner and Lido put Mustard Yellow beside #3fab90, as the accent.
Royal Blue #4169e1
shippedRoyal Blue is paired with #3fab90 in 6 real palettes, including Khan Academy's brand system and Brilliant's brand system, as the accent.
Real palettes that use #3fab90
Tints & shades
Harmonies
Contrast
| #3fab90 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.82:1 | fail | fail | fail | |
Aaon black | 7.44:1 | 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 #3fab90 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 #3fab90 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3fab90-a2beba-d459b3-1f2b2d-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