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
#23a5cd
#23a5cd
hex
#23a5cdrgb
rgb(35, 165, 205)hsl
hsl(194, 71%, 47%)oklch
oklch(0.673 0.119 224.7)Closest name: Blue Ocean (#009dc4)Relative luminance 0.3168
Colors that go with #23a5cd
Charcoal, Tomato and Terracotta 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 #23a5cd: softer than #000 and cool enough to feel like part of the same palette.
Tomato #ff6347
split-complementshippedTomato is a split-complement of #23a5cd: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Terracotta #e2725b
complementaryshippedTerracotta sits directly opposite #23a5cd on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #23a5cd in 7 real palettes, including Salesforce's brand system and Blueprint, as the accent.
Blue #0000ff
shipped5 real palettes, including Canva's brand system and Warp's brand system put Blue beside #23a5cd, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #23a5cd: 7 real palettes, including Gopro's brand system and Coca-Cola's brand system, as the lead colour.
Midnight Blue #191970
shipped9 real palettes, including SoFi's brand system and Confluent's brand system put Midnight Blue beside #23a5cd, as the accent.
Mustard Yellow #ffdb58
shipped4 real palettes, including Lido and Diner put Mustard Yellow beside #23a5cd, as the accent.
Real palettes that use #23a5cd
Tints & shades
Harmonies
Contrast
| #23a5cd as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.86:1 | fail | fail | fail | |
Aaon black | 7.34:1 | 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 #23a5cd as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#23a5cd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #23a5cd
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 #23a5cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/23a5cd-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