Color
#345df4
#345df4rgb(52, 93, 244)hsl(227, 90%, 58%)oklch(0.547 0.23 266.6)Colors that go with #345df4
Crimson, Orange Red and Slate Gray 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.
Crimson #dc143c
triadicshippedCrimson completes a triad with #345df4 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Orange Red #ff4500
shippedOrange Red is paired with #345df4 in 4 real palettes, including Strava's brand system and PlanetScale's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Slate Gray #708090
shippedSlate Gray is paired with #345df4 in 4 real palettes, including Slate Workspace and Indigo SaaS, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Taupe #483c32
shippedTaupe is paired with #345df4 in 4 real palettes, including Loom's brand system and Readymag's brand system, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Olive Green #808000
complementaryOlive Green sits directly opposite #345df4 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shippedBlue is paired with #345df4 in 3 real palettes, including Dropbox's brand system and MongoDB's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #345df4: softer than #000 and cool enough to feel like part of the same palette.
Deep Sky Blue #00bfff
shippedDeep Sky Blue is paired with #345df4 in 3 real palettes, including Calm's brand system and Warp's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #345df4
Tints & shades
Harmonies
Contrast
| #345df4 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.23:1 | pass | pass | fail |
|
Aaon black | 4.02:1 | fail | 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 #345df4 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
#345df4 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 #345df4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/345df4-9ca0c4-df7a4e-221f2d-e9eff1?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