Dusk
Open in tool →Slate blue with a copper accent — calm, professional, slightly editorial; suits consultancies and journals.
Color
#9399bd
#9399bd
hex
#9399bdrgb
rgb(147, 153, 189)hsl
hsl(231, 24%, 66%)oklch
oklch(0.691 0.053 277.5)Closest name: Easter Egg (#8e97c7)Relative luminance 0.3266
Colors that go with #9399bd
Charcoal, Sand 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 #9399bd: softer than #000 and cool enough to feel like part of the same palette.
Sand #c2b280
complementaryshippedSand sits directly opposite #9399bd on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Copper #b87333
shippedCopper is paired with #9399bd in 4 real palettes, including Dusk and Riverbed, as the accent — a combination designers have actually shipped, not a computed rotation.
Deep Sky Blue #00bfff
shippedDeep Sky Blue is paired with #9399bd in 4 real palettes, including Calm's brand system and Snowflake AI Data Cloud's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #9399bd in 4 real palettes, including Dusk and Open House, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Emerald Green #50c878
shippedEmerald Green is paired with #9399bd in 4 real palettes, including Ledger Dark and Scale AI's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Light Sea Green #20b2aa
triadicshippedLight Sea Green completes a triad with #9399bd — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Midnight Blue #191970
shippedMidnight Blue is paired with #9399bd in 7 real palettes, including Open House and First Snow, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #9399bd
Tints & shades
Harmonies
Contrast
| #9399bd as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.79:1 | fail | fail | fail | |
Aaon black | 7.53:1 | 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 #9399bd 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 #9399bd
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 #9399bd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/9399bd-9c9ec4-df834e-231f2d-e9eef1?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