Color
#591ef1
#591ef1rgb(89, 30, 241)hsl(257, 88%, 53%)oklch(0.488 0.273 282.2)Colors that go with #591ef1
Charcoal, Denim 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 #591ef1: softer than #000 and cool enough to feel like part of the same palette.
Denim #1560bd
analogousshippedDenim is #591ef1's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #591ef1: 10 real palettes, including Zillow's brand system and Oreo's brand system, as the supporting colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #591ef1: 5 real palettes, including Qualcomm's brand system and Roblox's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #591ef1 in 7 real palettes, including Gemstone and Coinbase's brand system, as the accent.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #591ef1: 4 real palettes, including Warp's brand system and Kraken's brand system, as the lead colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #591ef1: 6 real palettes, including Unity's brand system and OnePlus's brand system, as the lead colour.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #591ef1 in 5 real palettes, including Indigo SaaS and Unity's brand system, as the accent.
Real palettes that use #591ef1
Tints & shades
Harmonies
Contrast
| #591ef1 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.29:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.88:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #591ef1 as the background.
Brands using this color
Fonts for this mood
#591ef1 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 #591ef1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/591ef1-ac9cc4-dfc24e-291f2d-e9ebf1?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