Rain Garden
Open in tool →Wet-leaf teal and moss with a soft peach — an overcast spring, calmer than the bright version and better for long reading.
Color
#518a8a
#518a8a
hex
#518a8argb
rgb(81, 138, 138)hsl
hsl(180, 26%, 43%)oklch
oklch(0.594 0.06 195.7)Closest name: Arctic (#648589)Relative luminance 0.2176
Colors that go with #518a8a
Charcoal, Copper and Champagne 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 #518a8a: softer than #000 and cool enough to feel like part of the same palette.
Copper #b87333
split-complementshippedCopper is a split-complement of #518a8a: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Champagne #f7e7ce
shipped4 real palettes, including Forest Floor and Midnight Luxe put Champagne beside #518a8a, as that palette's text colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #518a8a: 5 real palettes, including Intel's brand system and Ink & Paper, as the lead colour.
Crimson #dc143c
shippedCrimson is paired with #518a8a in 9 real palettes, including Redfin's brand system and Diner, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #518a8a: 13 real palettes, including Peacock and Campus, as the supporting colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #518a8a: 4 real palettes, including Newsprint and Wendy's's brand system, as the lead colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #518a8a in 4 real palettes, including Ledger Dark and Noir Beauty, as the lead colour.
Real palettes that use #518a8a
Tints & shades
Harmonies
Contrast
| #518a8a as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.92:1 | fail | pass | fail | |
Aaon black | 5.35:1 | 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 #518a8a 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 #518a8a
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 #518a8a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/518a8a-a2bbbe-d45994-1f272d-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