Color
#636ba1
#636ba1rgb(99, 107, 161)hsl(232, 25%, 51%)oklch(0.544 0.085 276.7)Colors that go with #636ba1
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 #636ba1: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #636ba1 — 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 #636ba1 in 8 real palettes, including Lemon Squeezy's brand system and McDonald's's brand system, as the lead colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #636ba1: 7 real palettes, including Fintech Trust and Glacier, as the lead colour.
Crimson #dc143c
shippedCrimson is paired with #636ba1 in 15 real palettes, including Marvel's brand system and Retro Pop, as the accent.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #636ba1: 5 real palettes, including Astro's brand system and Deep Water, as the supporting colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #636ba1: 6 real palettes, including Honda's brand system and AT&T's brand system, as the supporting colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #636ba1 in 6 real palettes, including Open House and Sapphire & Gold, as the accent.
Real palettes that use #636ba1
Tints & shades
Harmonies
Contrast
| #636ba1 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.06:1 | pass | pass | fail |
|
Aaon black | 4.15:1 | 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 #636ba1 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
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 #636ba1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/636ba1-9c9dc4-df864e-231f2d-e9eef1?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