Color
#1d91c3
#1d91c3rgb(29, 145, 195)hsl(198, 74%, 44%)oklch(0.619 0.121 233.5)Colors that go with #1d91c3
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 #1d91c3: softer than #000 and cool enough to feel like part of the same palette.
Amber #ffbf00
shippedAmber is paired with #1d91c3 in 6 real palettes, including Beach Hut and Wired's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Blue #0000ff
shippedBlue is paired with #1d91c3 in 5 real palettes, including Readymag's brand system and Qualcomm'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 #1d91c3 in 7 real palettes, including Hershey's's brand system and Glacier, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Crimson #dc143c
shippedCrimson is paired with #1d91c3 in 6 real palettes, including Retro Pop 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 #1d91c3 in 6 real palettes, including Astro's brand system and Patreon's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #1d91c3 in 16 real palettes, including Gopro's brand system and American Express's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Red #ff0000
split-complementshippedRed is a split-complement of #1d91c3: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #1d91c3
Tints & shades
Harmonies
Contrast
| #1d91c3 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.57:1 | fail | pass | fail | |
Aaon black | 5.89:1 | 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 #1d91c3 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
#1d91c3 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 #1d91c3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/1d91c3-9cb3c4-df4e69-1f232d-e9f1f0?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