Lagoon
Open in tool →Turquoise and teal with a sand-yellow on white — shallow tropical water; the deep teal text is the reef.
Color
#3db3a5
#3db3a5
hex
#3db3a5rgb
rgb(61, 179, 165)hsl
hsl(173, 49%, 47%)oklch
oklch(0.698 0.106 183.9)Closest name: lightseagreen (#20b2aa)Relative luminance 0.3595
Colors that go with #3db3a5
Charcoal, Cornflower Blue 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 #3db3a5: softer than #000 and cool enough to feel like part of the same palette.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #3db3a5: 5 real palettes, including Canva's brand system and Arctic, as the supporting colour.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #3db3a5 in 4 real palettes, including Undergrowth and Forest Floor, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #3db3a5: 4 real palettes, including Open House and Peacock, as the lead colour.
Midnight Blue #191970
shipped7 real palettes, including Ford's brand system and Confluent's brand system put Midnight Blue beside #3db3a5, as the lead colour.
Mustard Yellow #ffdb58
shipped4 real palettes, including Diner and Lido put Mustard Yellow beside #3db3a5, as the accent.
Royal Blue #4169e1
shippedRoyal Blue is paired with #3db3a5 in 5 real palettes, including Khan Academy's brand system and Brilliant's brand system, as the accent.
Tomato #ff6347
split-complementshippedTomato is a split-complement of #3db3a5: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #3db3a5
Tints & shades
Harmonies
Contrast
| #3db3a5 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.56:1 | fail | fail | fail | |
Aaon black | 8.19:1 | 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 #3db3a5 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
mcpConnect your agent — build around #3db3a5
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #3db3a5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/3db3a5-a2bebe-d459a3-1f292d-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