Color
#6537c8
#6537c8rgb(101, 55, 200)hsl(259, 57%, 50%)oklch(0.483 0.209 290.9)Colors that go with #6537c8
Charcoal, Royal Blue 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 #6537c8: softer than #000 and cool enough to feel like part of the same palette.
Royal Blue #4169e1
analogousshippedRoyal Blue is #6537c8'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 #6537c8: 4 real palettes, including Zillow's brand system and Unilever's brand system, as the supporting colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #6537c8: 4 real palettes, including Coca-Cola's brand system and Blue Mono, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #6537c8 in 8 real palettes, including Gemstone and Wells Fargo's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #6537c8: 5 real palettes, including Linkedin's brand system and Unilever's brand system, as the lead colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #6537c8: 4 real palettes, including Datadog's brand system and Campbell's's brand system, as the accent.
Medium Slate Blue #7b68ee
shippedMedium Slate Blue shows up next to #6537c8 in 4 real palettes, including ClickUp's brand system and Stripe's brand system, as the supporting colour.
Real palettes that use #6537c8
Tints & shades
Harmonies
Contrast
| #6537c8 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.16:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.93:1 | 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 #6537c8 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
#6537c8 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 #6537c8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/6537c8-ad9cc4-dfc74e-2a1f2d-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