Still Water
Open in tool →Dusty teal and mist with a sand accent — low chroma, low contrast between colours, high contrast for text: the recipe for calm.
Color
#518fa4
#518fa4
hex
#518fa4rgb
rgb(81, 143, 164)hsl
hsl(195, 34%, 48%)oklch
oklch(0.616 0.071 222)Closest name: Blue Moon (#3992a8)Relative luminance 0.2407
Colors that go with #518fa4
Charcoal, Copper and Cobalt 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 #518fa4: softer than #000 and cool enough to feel like part of the same palette.
Copper #b87333
complementaryshippedCopper sits directly opposite #518fa4 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 #518fa4: 6 real palettes, including Hershey's's brand system and Glacier, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #518fa4 in 9 real palettes, including Retro Pop and Diner, as the lead colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #518fa4: 5 real palettes, including Telegram's brand system and Deep Water, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #518fa4: 16 real palettes, including Peacock and Campus, as the supporting colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #518fa4: 4 real palettes, including Honda's brand system and Wendy's's brand system, as the supporting colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #518fa4 in 5 real palettes, including Ledger Dark and Noir Beauty, as the lead colour.
Real palettes that use #518fa4
Tints & shades
Harmonies
Contrast
| #518fa4 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.61:1 | fail | pass | fail | |
Aaon black | 5.81:1 | 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 #518fa4 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 #518fa4
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 #518fa4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/518fa4-9cb5c4-df4e70-1f242d-e9f1ef?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