Tide Pool
Open in tool →Sea-green and slate with a coral — a literal tide pool: two cool tones, one warm creature.
Color
#289591
#289591
hex
#289591rgb
rgb(40, 149, 145)hsl
hsl(178, 58%, 37%)oklch
oklch(0.61 0.095 191.3)Closest name: Green Dynasty (#00988e)Relative luminance 0.2399
Colors that go with #289591
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 #289591: softer than #000 and cool enough to feel like part of the same palette.
Copper #b87333
triadicshippedCopper completes a triad with #289591 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Crimson #dc143c
complementaryshippedCrimson sits directly opposite #289591 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #289591: 4 real palettes, including Fintech Trust and Intel's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #289591: 10 real palettes, including Peacock and Intel's brand system, as the supporting colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #289591 in 4 real palettes, including Ledger Dark and Noir Beauty, as the lead colour.
Midnight Blue #191970
shipped8 real palettes, including Tide Pool and Ford's brand system put Midnight Blue beside #289591, as that palette's text colour.
Orange #ffa500
shipped4 real palettes, including Campus and Gopro's brand system put Orange beside #289591, as the accent.
Tints & shades
Harmonies
Contrast
| #289591 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.62:1 | fail | pass | fail | |
Aaon black | 5.8:1 | 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 #289591 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
Peacock
Open in tool →Teal, cobalt and magenta at full chroma on white — jewel tones in daylight; the trick is a near-black text with a blue cast.
mcpConnect your agent — build around #289591
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 #289591 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/289591-a2bcbe-d45999-1f282d-e9f1ed?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