Color
#3bab91
#3bab91rgb(59, 171, 145)hsl(166, 49%, 45%)oklch(0.671 0.108 174.4)Colors that go with #3bab91
Charcoal, Copper and Cornflower 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 #3bab91: softer than #000 and cool enough to feel like part of the same palette.
Copper #b87333
shippedDesigners have shipped Copper with #3bab91: 4 real palettes, including Clean Beauty and Wellness, as the accent.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #3bab91: 4 real palettes, including Canva's brand system and Spotify's brand system, as the supporting colour.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #3bab91 in 4 real palettes, including Undergrowth and Forest Floor, as the supporting colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #3bab91: 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 #3bab91, as the text colour against it.
Mustard Yellow #ffdb58
shipped4 real palettes, including Diner and Lido put Mustard Yellow beside #3bab91, as the accent.
Tomato #ff6347
split-complementshippedTomato is a split-complement of #3bab91: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #3bab91
Tints & shades
Harmonies
Contrast
| #3bab91 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.83:1 | fail | fail | fail | |
Aaon black | 7.42:1 | 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 #3bab91 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 #3bab91 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3bab91-a2bebb-d459b1-1f2a2d-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