Color
#3867ff
#3867ffrgb(56, 103, 255)hsl(226, 100%, 61%)oklch(0.576 0.231 266)Colors that go with #3867ff
Charcoal, Crimson 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #3867ff: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #3867ff — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Amber #ffbf00
shippedAmber is paired with #3867ff in 6 real palettes, including Mastodon hosted on mastodon.social's brand system and Walmart's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Blue #0000ff
shippedBlue is paired with #3867ff in 13 real palettes, including MongoDB's brand system and Signal's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Cobalt Blue #0047ab
shippedCobalt Blue is paired with #3867ff in 9 real palettes, including Behance's brand system and Nivea's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Cornflower Blue #6495ed
shippedCornflower Blue is paired with #3867ff in 6 real palettes, including Roblox's brand system and Webflow's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Deep Sky Blue #00bfff
shippedDeep Sky Blue is paired with #3867ff in 4 real palettes, including Elastic's brand system and Calm's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #3867ff in 11 real palettes, including Square's brand system and Fivetran blue's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #3867ff
Tints & shades
Harmonies
Contrast
| #3867ff as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.61:1 | pass | pass | fail |
|
Aaon black | 4.55:1 | 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 #3867ff as the background.
Brands using this color
Fonts for this mood
#3867ff 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 #3867ff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3867ff-9ca1c4-df774e-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