Lido
Open in tool →Pool blue, watermelon and sun on white — the poolside summer set; the deep teal text keeps it from going juvenile.
Color
#289fc3
#289fc3
hex
#289fc3rgb
rgb(40, 159, 195)hsl
hsl(194, 66%, 46%)oklch
oklch(0.655 0.112 223.5)Closest name: Blue Ocean (#009dc4)Relative luminance 0.2919
Colors that go with #289fc3
Charcoal, Amber and Blue 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 #289fc3: softer than #000 and cool enough to feel like part of the same palette.
Amber #ffbf00
shippedAmber is paired with #289fc3 in 6 real palettes, including Beach Hut and Salesforce's brand system, as the supporting colour.
Blue #0000ff
shipped4 real palettes, including Qualcomm's brand system and Unity's brand system put Blue beside #289fc3, as the accent.
Crimson #dc143c
shippedCrimson is paired with #289fc3 in 4 real palettes, including Diner and Riot Games's brand system, as the lead colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #289fc3: 4 real palettes, including Snowflake AI Data Cloud's brand system and Remix's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #289fc3: 8 real palettes, including Gopro's brand system and Coca-Cola's brand system, as the lead colour.
Midnight Blue #191970
shipped9 real palettes, including Ford's brand system and Confluent's brand system put Midnight Blue beside #289fc3, as the accent.
Chocolate #d2691e
complementaryChocolate sits directly opposite #289fc3 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 #289fc3
Tints & shades
Harmonies
Contrast
| #289fc3 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.07:1 | fail | pass | fail | |
Aaon black | 6.84:1 | 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 #289fc3 as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#289fc3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #289fc3
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 #289fc3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/289fc3-9cb6c4-df4e72-1f242d-e9f1ef?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