Riverbed
Open in tool →Wet-stone green and pebble grey with a copper accent — an earth palette that leans cool, for outdoor and wellness.
Color
#647d75
#647d75
hex
#647d75rgb
rgb(100, 125, 117)hsl
hsl(161, 11%, 44%)oklch
oklch(0.567 0.032 173.7)Closest name: Ecological (#677f70)Relative luminance 0.1866
Colors that go with #647d75
Charcoal, Champagne and Copper 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 #647d75: softer than #000 and cool enough to feel like part of the same palette.
Champagne #f7e7ce
shipped6 real palettes, including Forest Floor and Coffee Bar put Champagne beside #647d75, as that palette's text colour.
Copper #b87333
shippedDesigners have shipped Copper with #647d75: 7 real palettes, including Riverbed and Wellness, as the accent.
Crimson #dc143c
shippedCrimson is paired with #647d75 in 8 real palettes, including Five Guys's brand system and Netflix's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #647d75: 8 real palettes, including Campus and Intel's brand system, as the lead colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #647d75: 4 real palettes, including Studio Grey and Notion's brand system, as the accent.
Goldenrod #daa520
shippedGoldenrod shows up next to #647d75 in 6 real palettes, including Noir Beauty and Mid-Century, as the lead colour.
Rose Gold #b76e79
complementaryRose Gold sits directly opposite #647d75 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 #647d75
Tints & shades
Harmonies
Contrast
| #647d75 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.44:1 | fail | pass | fail | |
Aaon black | 4.73:1 | 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 #647d75 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 #647d75
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 #647d75 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/647d75-a2beb8-d459bb-1f2c2d-e9f1eb?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