Indigo SaaS
Open in tool →The dependable indigo-and-emerald B2B pairing: indigo for primary actions, emerald reserved for success states.
Color
#513be3
#513be3
hex
#513be3rgb
rgb(81, 59, 227)hsl
hsl(248, 75%, 56%)oklch
oklch(0.495 0.238 279.1)Closest name: Blurple (#5539cc)Relative luminance 0.1042
Colors that go with #513be3
Charcoal, Sea Green 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 #513be3: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #513be3 — 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 #513be3 in 6 real palettes, including Walmart's brand system and Mastodon hosted on mastodon.social's brand system, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #513be3: 11 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 #513be3: 10 real palettes, including Qualcomm's brand system and Roblox's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #513be3 in 14 real palettes, including Coinbase's brand system and Behance's brand system.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #513be3: 5 real palettes, including Kraken's brand system and Warp's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #513be3: 8 real palettes, including Dairy Queen's brand system and Pixar's brand system, as the supporting colour.
Real palettes that use #513be3
Tints & shades
Harmonies
Contrast
| #513be3 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.81:1 | pass | pass | fail |
|
Aaon black | 3.08:1 | 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 #513be3 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
Fonts for this mood
#513be3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #513be3
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #513be3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/513be3-a69cc4-dfac4e-271f2d-e9ecf1?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