Color
#307bfd
#307bfdrgb(48, 123, 253)hsl(218, 98%, 59%)oklch(0.61 0.208 260.7)Colors that go with #307bfd
Charcoal, Crimson and Copper 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 #307bfd: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #307bfd — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Copper #b87333
complementaryshippedCopper sits directly opposite #307bfd on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #307bfd in 8 real palettes, including Heatwave and Walmart's brand system, as the supporting colour.
Blue #0000ff
shipped13 real palettes, including Cargo's brand system and Samsung's brand system put Blue beside #307bfd, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #307bfd: 8 real palettes, including Behance's brand system and Carrefour's brand system, as the supporting colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #307bfd: 7 real palettes, including Elastic's brand system and Patreon's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #307bfd: 14 real palettes, including Coursera's brand system and Guinness's brand system, as the accent.
Real palettes that use #307bfd
Tints & shades
Harmonies
Contrast
| #307bfd as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.91:1 | fail | pass | fail | |
Aaon black | 5.38:1 | pass | 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 #307bfd as the background.
Brands using this color
- PostHogsecondary · #2f80fa · Δ1.355
- OnePlussecondary · #007bff · Δ1.648
- Abstractaccent · #007aff · Δ1.738
- Cargoprimary · #007aff · Δ1.738
- Databricksaccent · #007aff · Δ1.738
- Liquid Deathsecondary · #007aff · Δ1.738
- PostHogprimary · #007aff · Δ1.738
- Samsungsecondary · #007aff · Δ1.738
- Penpotaccent · #1677ff · Δ1.76
- Confluentsecondary · #0079ff · Δ1.857
Fonts for this mood
#307bfd reads as cool, vivid, technical. 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 #307bfd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/307bfd-9ca6c4-df644e-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