# #409eb5

A color — cool, modern. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#409eb5`
- RGB: rgb(64, 158, 181)
- HSL: hsl(192, 48%, 48%)
- OKLCH: oklch(0.653 0.093 216.8)
- Relative luminance: 0.2888
- Nearest named color: Blue Ocean (#009dc4, Δ 3.111) — https://brandsweets.com/colors/blue-ocean
- Moods: cool, modern
- Page: https://brandsweets.com/colors/409eb5

## Tints & shades

- Tints (toward white): #4eaac1, #60b3c7, #73bcce, #86c5d5, #99cedb, #acd7e2, #bfe0e8, #d2e9ef, #e5f2f6, #f7fbfc
- Shades (toward black): #3a91a6, #348093, #2e7384, #286371, #225562, #1d4853, #173840, #112b31, #0b1a1e, #050d0f

## Harmonies

- Complementary: #b55740
- Analogous: #40b592, #4063b5
- Triadic: #b5409e, #9eb540
- Split-complementary: #b54063, #b59240
- Tetradic: #9240b5, #b55740, #63b540

## Colors that go with #409eb5

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #409eb5: softer than #000 and cool enough to feel like part of the same palette. Seen in: Lido (https://brandsweets.com/palettes/vivid#lido), Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue), Coastal (https://brandsweets.com/palettes/cool#coastal), Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com). — https://brandsweets.com/colors/charcoal
- **Terracotta** #e2725b [harmony, pool: complementary] — Terracotta sits directly opposite #409eb5 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Alpine (https://brandsweets.com/palettes/cool#alpine), Resort (https://brandsweets.com/palettes/light#resort). — https://brandsweets.com/colors/terracotta
- **Amber** #ffbf00 [pool] — Amber is paired with #409eb5 in 5 real palettes, including Beach Hut and Salesforce's brand system, as the supporting colour. Seen in: Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Wired (https://brandsweets.com/colors/brands/wired-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint). — https://brandsweets.com/colors/amber
- **Copper** #b87333 [pool] — Designers have shipped Copper with #409eb5: 4 real palettes, including Dusk and Clean Beauty, as the accent. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty), Atelier (https://brandsweets.com/palettes/elegant#atelier), Notion (https://brandsweets.com/colors/brands/notion). — https://brandsweets.com/colors/copper
- **Cornflower Blue** #6495ed [harmony, pool: analogous] — Cornflower Blue is #409eb5's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Arctic (https://brandsweets.com/palettes/clean#arctic), Canva (https://brandsweets.com/colors/brands/canva-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #409eb5 in 5 real palettes, including Diner and Retro Pop, as the lead colour. Seen in: Diner (https://brandsweets.com/palettes/vivid#diner), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Redfin (https://brandsweets.com/colors/brands/redfin-com), Riot Games (https://brandsweets.com/colors/brands/riotgames-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #409eb5: 5 real palettes, including Telegram's brand system and Snowflake AI Data Cloud's brand system, as the lead colour. Seen in: Telegram (https://brandsweets.com/colors/brands/telegram-org), Snowflake AI Data Cloud (https://brandsweets.com/colors/brands/snowflake-com), Remix (https://brandsweets.com/colors/brands/remix-run), Figma (https://brandsweets.com/colors/brands/figma). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #409eb5: 10 real palettes, including Gopro's brand system and Peacock, as the lead colour. Seen in: Gopro (https://brandsweets.com/colors/brands/gopro-com), Peacock (https://brandsweets.com/palettes/vivid#peacock), Dusk (https://brandsweets.com/palettes/cool#dusk), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/denim

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 3.1:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #348093 (4.51:1); AA: background → #2b2b2b (4.57:1); AAA: text → #265f6d (7.14:1)
- On black (#000000): 6.78:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #41a1b9 (7.02:1)

## Fonts for this mood

- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/409eb5-a2b5be-df4e77-1f242d-e9f1ef?lock=0&style=vibrant
(Humans lock/regenerate in the tool; the URL is the state — read `lock=` back to see what they kept.)

## Connect an agent

Point any MCP client at the BrandSweets colors endpoint for the same engine:

- Endpoint: https://mcp.brandsweets.com/colors/mcp
- Tools: `analyze_color` (e.g. `analyze_color({ color: "#409eb5" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.