Indigo SaaS
Open in tool →The dependable indigo-and-emerald B2B pairing: indigo for primary actions, emerald reserved for success states.
Color
#553fe4
#553fe4
hex
#553fe4rgb
rgb(85, 63, 228)hsl
hsl(248, 75%, 57%)oklch
oklch(0.504 0.235 279.9)Closest name: Blurple (#5539cc)Relative luminance 0.1109
Colors that go with #553fe4
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 #553fe4: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #553fe4 — 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 #553fe4 in 5 real palettes, including Walmart's brand system and Mastodon hosted on mastodon.social's brand system, as the accent.
Blue #0000ff
shipped5 real palettes, including Signal's brand system and Headspace's brand system put Blue beside #553fe4, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #553fe4: 6 real palettes, including NHL's brand system and Warbyparker's brand system, as the accent.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #553fe4: 8 real palettes, including Qualcomm's brand system and Roblox's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #553fe4 in 10 real palettes, including Coinbase's brand system and Chase's brand system.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #553fe4: 5 real palettes, including Kraken's brand system and Calm's brand system, as the accent.
Real palettes that use #553fe4
Tints & shades
Harmonies
Contrast
| #553fe4 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.53:1 | pass | pass | fail |
|
Aaon black | 3.22:1 | 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 #553fe4 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
#553fe4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #553fe4
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 #553fe4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/553fe4-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