Coastal
Open in tool →Sea-teal, sky and sand — bright without shouting; works for travel, wellness, and anything near water.
Color
#40a08d
#40a08d
hex
#40a08drgb
rgb(64, 160, 141)hsl
hsl(168, 43%, 44%)oklch
oklch(0.643 0.095 177.9)Closest name: Baltic (#279d9f)Relative luminance 0.2815
Colors that go with #40a08d
Charcoal, Copper and Crimson 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 #40a08d: softer than #000 and cool enough to feel like part of the same palette.
Copper #b87333
shippedDesigners have shipped Copper with #40a08d: 6 real palettes, including Clean Beauty and Wellness, as the accent.
Crimson #dc143c
shippedCrimson is paired with #40a08d in 6 real palettes, including Diner and DuckDuckGo's brand system, as the lead colour.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #40a08d in 4 real palettes, including Undergrowth and Forest Floor, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #40a08d: 7 real palettes, including Peacock and Intel's brand system, as the supporting colour.
Midnight Blue #191970
shipped8 real palettes, including Tide Pool and Fintech Trust put Midnight Blue beside #40a08d, as that palette's text colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #40a08d in 7 real palettes, including Khan Academy's brand system and Brilliant's brand system, as the accent.
Deep Pink #ff1493
complementaryDeep Pink sits directly opposite #40a08d 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 #40a08d
Tints & shades
Harmonies
Contrast
| #40a08d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.17:1 | fail | pass | fail | |
Aaon black | 6.63:1 | pass | pass | fail |
|
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #40a08d 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 #40a08d
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 #40a08d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/40a08d-a2bebc-d459ad-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