Color
#4538cc
#4538ccrgb(69, 56, 204)hsl(245, 59%, 51%)oklch(0.46 0.217 277.5)Colors that go with #4538cc
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 #4538cc: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #4538cc — 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 #4538cc in 5 real palettes, including Walmart's brand system and Warner Bros.'s brand system, as the accent.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #4538cc: 7 real palettes, including Qualcomm's brand system and Blue Mono, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #4538cc in 11 real palettes, including Behance's brand system and Chase's brand system, as the accent.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #4538cc: 8 real palettes, including Coursera's brand system and HashiCorp's brand system, as the supporting colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #4538cc: 4 real palettes, including Datadog's brand system and Nissan's brand system, as the accent.
Light Sky Blue #87cefa
shippedLight Sky Blue is paired with #4538cc in 4 real palettes, including 1password's brand system and Telehealth, as the supporting colour.
Real palettes that use #4538cc
Tints & shades
Harmonies
Contrast
| #4538cc as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.8:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.69:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4538cc as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#4538cc reads as cool, modern. The font library is tagged with the same vocabulary:
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 #4538cc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/4538cc-a49cc4-dfa54e-261f2d-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