Color
#3a99bb
#3a99bbrgb(58, 153, 187)hsl(196, 53%, 48%)oklch(0.642 0.101 225.6)Colors that go with #3a99bb
Charcoal, Amber and Cobalt 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 #3a99bb: softer than #000 and cool enough to feel like part of the same palette.
Amber #ffbf00
shippedAmber is paired with #3a99bb in 7 real palettes, including Beach Hut and Wired's brand system, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #3a99bb: 4 real palettes, including Hershey's's brand system and Blue Mono, as the supporting colour.
Copper #b87333
shippedDesigners have shipped Copper with #3a99bb: 4 real palettes, including Dusk and Notion's brand system, as the accent.
Crimson #dc143c
shippedCrimson is paired with #3a99bb in 4 real palettes, including Diner and Retro Pop, as the lead colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #3a99bb: 5 real palettes, including Snowflake AI Data Cloud's brand system and Remix's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #3a99bb: 11 real palettes, including Gopro's brand system and Dusk, as the lead colour.
Chocolate #d2691e
complementaryChocolate sits directly opposite #3a99bb on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Real palettes that use #3a99bb
Tints & shades
Harmonies
Contrast
| #3a99bb as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.25:1 | fail | pass | fail | |
Aaon black | 6.45:1 | 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 #3a99bb 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
#3a99bb reads as cool, modern. 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 #3a99bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3a99bb-9cb5c4-df4e6e-1f232d-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