Indigo SaaS
Open in tool →The dependable indigo-and-emerald B2B pairing: indigo for primary actions, emerald reserved for success states.
Color
#646e7d
#646e7d
hex
#646e7drgb
rgb(100, 110, 125)hsl
hsl(216, 11%, 44%)oklch
oklch(0.535 0.027 258.4)Closest name: Ashen Whisper (#646b7a)Relative luminance 0.1534
Colors that go with #646e7d
Charcoal, Amber and Champagne 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 that reads cleanly against #646e7d without the hard edge of pure #000.
Amber #ffbf00
shippedAmber is paired with #646e7d in 4 real palettes, including Beach Hut and Lemon Squeezy's brand system, as the supporting colour.
Champagne #f7e7ce
shipped7 real palettes, including Forest Floor and BrandSweets's brand system put Champagne beside #646e7d, as that palette's text colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #646e7d: 5 real palettes, including Ink & Paper and Fintech Trust, as the accent.
Copper #b87333
shippedDesigners have shipped Copper with #646e7d: 7 real palettes, including Riverbed and Dusk, as the accent.
Crimson #dc143c
shippedCrimson is paired with #646e7d in 10 real palettes, including Retro Pop and Redfin's brand system, as the lead colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #646e7d: 4 real palettes, including Deep Water and Warp's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #646e7d: 13 real palettes, including Campus and The New York Times's brand system, as the lead colour.
Real palettes that use #646e7d
Tints & shades
Harmonies
Contrast
| #646e7d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.16:1 | pass | pass | fail |
|
Aaon black | 4.07:1 | 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 #646e7d 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
mcpConnect your agent — build around #646e7d
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 #646e7d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/646e7d-9ca7c4-df5f4e-201f2d-e9f0f1?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