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
#51908b
#51908b
hex
#51908brgb
rgb(81, 144, 139)hsl
hsl(175, 28%, 44%)oklch
oklch(0.61 0.066 189)Closest name: Highlands (#449084)Relative luminance 0.2356
Colors that go with #51908b
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 #51908b: softer than #000 and cool enough to feel like part of the same palette.
Copper #b87333
split-complementshippedCopper is a split-complement of #51908b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Crimson #dc143c
shippedCrimson is paired with #51908b in 8 real palettes, including Diner and Redfin's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #51908b: 10 real palettes, including Peacock and Intel's brand system, as the supporting colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #51908b in 5 real palettes, including Noir Beauty and Ledger Dark, as the lead colour.
Midnight Blue #191970
shipped9 real palettes, including Tide Pool and Ford's brand system put Midnight Blue beside #51908b, as that palette's text colour.
Orange #ffa500
shipped4 real palettes, including Campus and Graphite put Orange beside #51908b, as the accent.
Peru #cd853f
shipped4 real palettes, including Estate and Paper & Pine put Peru beside #51908b, as the lead colour.
Real palettes that use #51908b
Tints & shades
Harmonies
Contrast
| #51908b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.68:1 | fail | pass | fail | |
Aaon black | 5.71:1 | 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 #51908b 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 #51908b
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 #51908b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/51908b-a2bdbe-d4599f-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