Circuit
Open in tool →Violet plus cyan is the current AI-product signal — pair it with pure black type to keep it from going candy.
Color
#28bbd2
#28bbd2
hex
#28bbd2rgb
rgb(40, 187, 210)hsl
hsl(188, 68%, 49%)oklch
oklch(0.729 0.119 211.2)Closest name: Blue Bobbin (#52b4ca)Relative luminance 0.4064
Colors that go with #28bbd2
Charcoal, Denim and Midnight 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 #28bbd2: softer than #000 and cool enough to feel like part of the same palette.
Denim #1560bd
shippedDenim is paired with #28bbd2 in 4 real palettes, including Coca-Cola's brand system and UEFA's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #28bbd2 in 5 real palettes, including Ford's brand system and First Snow, as the accent — a combination designers have actually shipped, not a computed rotation.
Taupe #483c32
shippedTaupe is paired with #28bbd2 in 10 real palettes, including Cursor's brand system and Crayon Box, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Salmon #fa8072
complementarySalmon sits directly opposite #28bbd2 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Dark Orange #ff8c00
split-complementshippedDark Orange is a split-complement of #28bbd2: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Hot Pink #ff69b4
split-complementshippedHot Pink is a split-complement of #28bbd2: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Blue Violet #8a2be2
shippedBlue Violet is paired with #28bbd2 in 3 real palettes, including Circuit and Taco Bell's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #28bbd2
Tints & shades
Harmonies
Contrast
| #28bbd2 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.3:1 | fail | fail | fail | |
Aaon black | 9.13:1 | 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 #28bbd2 as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#28bbd2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #28bbd2
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 #28bbd2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/28bbd2-a2b7be-df4e81-1f252d-e9f1ee?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