Dusk
Open in tool →Slate blue with a copper accent — calm, professional, slightly editorial; suits consultancies and journals.
Color
#899bb3
#899bb3
hex
#899bb3rgb
rgb(137, 155, 179)hsl
hsl(214, 22%, 62%)oklch
oklch(0.684 0.041 255.7)Closest name: Blank Stare (#8b9cac)Relative luminance 0.3202
Colors that go with #899bb3
Charcoal, Peru and Burlywood 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 #899bb3: softer than #000 and cool enough to feel like part of the same palette.
Peru #cd853f
complementaryshippedPeru sits directly opposite #899bb3 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Burlywood #deb887
shippedBurlywood is paired with #899bb3 in 4 real palettes, including Polaroid and Kiln, as the accent.
Copper #b87333
shippedDesigners have shipped Copper with #899bb3: 5 real palettes, including Dusk and Riverbed, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #899bb3: 4 real palettes, including Dusk and Open House, as the lead colour.
Midnight Blue #191970
shipped8 real palettes, including Open House and First Snow put Midnight Blue beside #899bb3, as the text colour against it.
Periwinkle #ccccff
shippedPeriwinkle shows up next to #899bb3 in 4 real palettes, including Calendly's brand system and Blue Mono, as the supporting colour.
Powder Blue #b0e0e6
shippedDesigners have shipped Powder Blue with #899bb3: 5 real palettes, including First Snow and Crypto.com's brand system, as the accent.
Real palettes that use #899bb3
Tints & shades
Harmonies
Contrast
| #899bb3 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.84:1 | fail | fail | fail | |
Aaon black | 7.4:1 | pass | pass | pass | Passes AAA — no fix needed. |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #899bb3 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 #899bb3
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 #899bb3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/899bb3-9ca9c4-df5a4e-1f1f2d-e9f0f1?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