Color
#129ea5
#129ea5rgb(18, 158, 165)hsl(183, 80%, 36%)oklch(0.637 0.106 200.5)Colors that go with #129ea5
Charcoal, Red 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 #129ea5: softer than #000 and cool enough to feel like part of the same palette.
Red #ff0000
complementaryshippedRed sits directly opposite #129ea5 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Copper #b87333
shippedDesigners have shipped Copper with #129ea5: 5 real palettes, including Clean Beauty and Dusk, as the accent.
Crimson #dc143c
shippedCrimson is paired with #129ea5 in 5 real palettes, including Diner and Redfin's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #129ea5: 6 real palettes, including Peacock and Gopro's brand system, as the supporting colour.
Midnight Blue #191970
shipped8 real palettes, including Ford's brand system and Tide Pool put Midnight Blue beside #129ea5, as the lead colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #129ea5 in 4 real palettes, including Confluent's brand system and Elastic's brand system, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #129ea5 in 10 real palettes, including Rain Garden and Still Water, as that palette's text colour.
Real palettes that use #129ea5
Tints & shades
Harmonies
Contrast
| #129ea5 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.25:1 | fail | pass | fail | |
Aaon black | 6.46:1 | 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 #129ea5 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#129ea5 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 #129ea5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/129ea5-a2b9be-d4598e-1f262d-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