Color
#303e45
#303e45rgb(48, 62, 69)hsl(200, 18%, 23%)oklch(0.354 0.022 229.8)Colors that go with #303e45
Blue, Blush Pink and Burlywood 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.
Blue #0000ff
shipped10 real palettes, including Dunkin''s brand system and Headspace's brand system put Blue beside #303e45, as the supporting colour.
Blush Pink #e8b4b8
shipped5 real palettes, including Garden Wedding and Nursery put Blush Pink beside #303e45, as the supporting colour.
Burlywood #deb887
shippedBurlywood is paired with #303e45 in 5 real palettes, including Polaroid and Coastal, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #303e45: 6 real palettes, including Clean Beauty and Paper & Pine, as the lead colour.
Champagne #f7e7ce
shipped5 real palettes, including Sweetgreen's brand system and Darkroom put Champagne beside #303e45, as the supporting colour.
Copper #b87333
shippedDesigners have shipped Copper with #303e45: 9 real palettes, including Notion's brand system and Clean Beauty.
Crimson #dc143c
shippedCrimson is paired with #303e45 in 10 real palettes, including Codecademy's brand system and Dunkin''s brand system, as the accent.
White Smoke #f5f5f5
neutralWhite Smoke is the near-white surface #303e45 was made for — maximum legibility with no colour cast to argue with.
Real palettes that use #303e45
Tints & shades
Harmonies
Contrast
| #303e45 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 11.05:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.9:1 | 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 #303e45 as the background.
Brands using this color
Fonts for this mood
#303e45 reads as cool, muted, dark. 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 #303e45 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/303e45-9cb2c4-df4e64-1f232d-e9f1f0?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