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
#648ca0
#648ca0
hex
#648ca0rgb
rgb(100, 140, 160)hsl
hsl(200, 24%, 51%)oklch
oklch(0.618 0.054 230.3)Closest name: lightslategray (#778899)Relative luminance 0.24
Colors that go with #648ca0
Charcoal, Copper and Blush Pink 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 #648ca0: softer than #000 and cool enough to feel like part of the same palette.
Copper #b87333
complementaryshippedCopper sits directly opposite #648ca0 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blush Pink #e8b4b8
shipped4 real palettes, including Rain Garden and Estate put Blush Pink beside #648ca0, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #648ca0: 4 real palettes, including Ink & Paper and Hershey's's brand system, as the accent.
Crimson #dc143c
shippedCrimson is paired with #648ca0 in 6 real palettes, including Retro Pop and Diner, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #648ca0: 10 real palettes, including Dusk and Campus, as the lead colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #648ca0 in 4 real palettes, including Ledger Dark and Noir Beauty, as the lead colour.
Midnight Blue #191970
shipped10 real palettes, including Plaid's brand system and Ford's brand system put Midnight Blue beside #648ca0, as the supporting colour.
Tints & shades
Harmonies
Contrast
| #648ca0 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 #648ca0 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 #648ca0
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 #648ca0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/648ca0-9cb2c4-df4e64-1f232d-e9f1f0?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