# #4c03a6

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

## Values

- Hex: `#4c03a6`
- RGB: rgb(76, 3, 166)
- HSL: hsl(267, 96%, 33%)
- OKLCH: oklch(0.38 0.211 291.3)
- Relative luminance: 0.0435
- Nearest named color: Galactic Civilization (#442288, Δ 5.569) — https://brandsweets.com/colors/galactic-civilization
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/4c03a6

## Tints & shades

- Tints (toward white): #5c04c8, #6a05e6, #7c14fa, #8c32fb, #a055fc, #b173fc, #c496fd, #d5b4fd, #e9d7fe, #f9f5ff
- Shades (toward black): #450396, #3e0387, #370278, #300269, #2c025f, #250250, #1e0141, #170132, #100123, #090014

## Harmonies

- Complementary: #5ca503
- Analogous: #030ba5, #9d03a5
- Triadic: #a54c03, #03a54c
- Split-complementary: #a59d03, #0ba503
- Tetradic: #a5030b, #5ca503, #03a59d

## Colors that go with #4c03a6

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

- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #4c03a6's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Nivea (https://brandsweets.com/colors/brands/nivea-com), Discord (https://brandsweets.com/colors/brands/discord), Wayfair (https://brandsweets.com/colors/brands/wayfair-com), Nokia (https://brandsweets.com/colors/brands/nokia-com). — https://brandsweets.com/colors/royalblue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #4c03a6: 4 real palettes, including Zillow's brand system and Tide's brand system, as the supporting colour. Seen in: Zillow (https://brandsweets.com/colors/brands/zillow-com), Tide (https://brandsweets.com/colors/brands/tide-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), Oreo (https://brandsweets.com/colors/brands/oreo-com). — https://brandsweets.com/colors/cobalt
- **Midnight Blue** #191970 [pool] — 4 real palettes, including Kraken's brand system and Blue Mono put Midnight Blue beside #4c03a6, as the lead colour. Seen in: Kraken (https://brandsweets.com/colors/brands/kraken-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Air France (https://brandsweets.com/colors/brands/airfrance-com). — https://brandsweets.com/colors/midnightblue
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #4c03a6 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. — https://brandsweets.com/colors/olive
- **Denim** #1560bd [pool] — Designers have shipped Denim with #4c03a6: 3 real palettes, including Slack's brand system and Unilever's brand system, as the lead colour. Seen in: Slack (https://brandsweets.com/colors/brands/slack-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), Warbyparker (https://brandsweets.com/colors/brands/warbyparker-com). — https://brandsweets.com/colors/denim
- **Steel Blue** #4682b4 [pool] — Designers have shipped Steel Blue with #4c03a6: 3 real palettes, including FedEx's brand system and Hershey's's brand system, as the accent. Seen in: FedEx (https://brandsweets.com/colors/brands/fedex-com), Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/steelblue
- **Forest Green** #228b22 [harmony: split] — Forest Green is a split-complement of #4c03a6: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/forestgreen
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #4c03a6: softer than #000 and cool enough to feel like part of the same palette. Seen in: dbt Labs (https://brandsweets.com/colors/brands/getdbt-com). — https://brandsweets.com/colors/charcoal

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

- On white (#ffffff): 11.22:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.87:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #9846fb (4.6:1); AA: background → #a6a6a6 (4.61:1); AAA: text → #b478fc (7.03:1); AAA: background → #cfcfcf (7.2:1)

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- 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/4c03a6-b39cc4-dfda4e-2c1f2d-e9eaf1?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: "#4c03a6" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.