Color
#129fb5
#129fb5rgb(18, 159, 181)hsl(188, 82%, 39%)oklch(0.646 0.11 212.3)Colors that go with #129fb5
Charcoal, Orange Red and Amber 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.
Orange Red #ff4500
complementaryshippedOrange Red sits directly opposite #129fb5 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 #129fb5 in 4 real palettes, including Beach Hut and Wired's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Cobalt Blue #0047ab
shippedCobalt Blue is paired with #129fb5 in 4 real palettes, including Fintech Trust and Hershey's's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Crimson #dc143c
shippedCrimson is paired with #129fb5 in 4 real palettes, including Diner and Redfin's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Deep Sky Blue #00bfff
shippedDeep Sky Blue is paired with #129fb5 in 4 real palettes, including Snowflake AI Data Cloud's brand system and Remix's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #129fb5 in 7 real palettes, including Gopro's brand system and Peacock, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #129fb5 in 10 real palettes, including Ford's brand system and Confluent's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #129fb5
Tints & shades
Harmonies
Contrast
| #129fb5 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.16:1 | fail | pass | fail | |
Aaon black | 6.65:1 | 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 #129fb5 as the background.
Brands using this color
Fonts for this mood
#129fb5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
Point 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.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #129fb5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/129fb5-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