Indigo SaaS
Open in tool →The dependable indigo-and-emerald B2B pairing: indigo for primary actions, emerald reserved for success states.
Color
#4b4ddd
#4b4ddd
hex
#4b4dddrgb
rgb(75, 77, 221)hsl
hsl(239, 68%, 58%)oklch
oklch(0.511 0.214 275.2)Closest name: Arcane Brew (#5260e1)Relative luminance 0.1202
Colors that go with #4b4ddd
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 #4b4ddd: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #4b4ddd — 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 #4b4ddd in 6 real palettes, including Walmart's brand system and Wikipedia's brand system, as the accent.
Blue #0000ff
shipped11 real palettes, including Signal's brand system and Headspace's brand system put Blue beside #4b4ddd, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #4b4ddd: 9 real palettes, including NHL's brand system and Warbyparker's brand system, as the accent.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #4b4ddd: 8 real palettes, including Roblox's brand system and Coca-Cola's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #4b4ddd in 17 real palettes, including Chase's brand system and Netflix's brand system, as the accent.
Dark Orchid #9932cc
analogousshippedDark Orchid is #4b4ddd's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Real palettes that use #4b4ddd
Tints & shades
Harmonies
Contrast
| #4b4ddd as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.17:1 | pass | pass | fail |
|
Aaon black | 3.4:1 | 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 #4b4ddd 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
#4b4ddd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #4b4ddd
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 #4b4ddd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/4b4ddd-a09cc4-df964e-251f2d-e9edf1?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