# #815ef3

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

## Values

- Hex: `#815ef3`
- RGB: rgb(129, 94, 243)
- HSL: hsl(254, 86%, 66%)
- OKLCH: oklch(0.597 0.213 289.1)
- Relative luminance: 0.1914
- Nearest named color: mediumslateblue (#7b68ee, Δ 2.397) — https://brandsweets.com/colors/mediumslateblue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/815ef3

## Tints & shades

- Tints (toward white): #8c6cf4, #977af5, #a68df6, #b19bf8, #bcaaf9, #c7b8fa, #d2c6fb, #e1d9fc, #ece7fd, #f8f6fe
- Shades (toward black): #6a41f1, #5425ef, #4111df, #390fc2, #300ca6, #280a8a, #20086d, #16064c, #0e042f, #060113

## Harmonies

- Complementary: #d0f35e
- Analogous: #5e86f3, #cb5ef3
- Triadic: #f3815e, #5ef381
- Split-complementary: #f3cb5e, #86f35e
- Tetradic: #f35e86, #d0f35e, #5ef3cb

## Colors that go with #815ef3

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

- **Amber** #ffbf00 [pool] — Amber is paired with #815ef3 in 4 real palettes, including Mastodon hosted on mastodon.social's brand system and Blueprint, as the accent. Seen in: Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Google (https://brandsweets.com/colors/brands/google-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 8 real palettes, including Signal's brand system and Qualcomm's brand system put Blue beside #815ef3, as the supporting colour. Seen in: Signal (https://brandsweets.com/colors/brands/signal-org), Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Penpot (https://brandsweets.com/colors/brands/penpot-app), EA (https://brandsweets.com/colors/brands/ea-com). — https://brandsweets.com/colors/blue
- **Crimson** #dc143c [pool] — Crimson is paired with #815ef3 in 5 real palettes, including Marvel's brand system and Behance's brand system, as the accent. Seen in: Marvel (https://brandsweets.com/colors/brands/marvel-com), Behance (https://brandsweets.com/colors/brands/behance-net), Gemstone (https://brandsweets.com/palettes/vivid#gemstone), WWE (https://brandsweets.com/colors/brands/wwe-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #815ef3: 4 real palettes, including Calm's brand system and Render's brand system, as the lead colour. Seen in: Calm (https://brandsweets.com/colors/brands/calm-com), Render (https://brandsweets.com/colors/brands/render-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Elastic (https://brandsweets.com/colors/brands/elastic-co). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #815ef3: 5 real palettes, including Linkedin's brand system and Fivetran blue's brand system, as the lead colour. Seen in: Linkedin (https://brandsweets.com/colors/brands/linkedin-com), Fivetran blue (https://brandsweets.com/colors/brands/fivetran-com), Guinness (https://brandsweets.com/colors/brands/guinness-com), Coursera (https://brandsweets.com/colors/brands/coursera-org). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 7 real palettes, including Lavender Haze and Discord's brand system put Midnight Blue beside #815ef3, as that palette's text colour. Seen in: Lavender Haze (https://brandsweets.com/palettes/playful#lavender-haze), Discord (https://brandsweets.com/colors/brands/discord), Marvel (https://brandsweets.com/colors/brands/marvel-com), Telehealth (https://brandsweets.com/palettes/modern#telehealth). — https://brandsweets.com/colors/midnightblue
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #815ef3: softer than #000 and cool enough to feel like part of the same palette. Seen in: Docker (https://brandsweets.com/colors/brands/docker-com). — https://brandsweets.com/colors/charcoal
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #815ef3 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

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

- On white (#ffffff): 4.35:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #7d59f3 (4.57:1); AA: background → #0a0a0a (4.55:1); AAA: text → #582aef (7.02:1)
- On black (#000000): 4.83:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #9e84f6 (7.09:1)

## Brands using this color

- **Obsidian** — secondary #8a5cf5 (Δ 1.516) — https://brandsweets.com/colors/brands/obsidian-md

## Curated palettes containing it

- **Lavender Haze** (playful, cool, light) — #8b5cf6, #c4b5fd, #f472b6, #faf7ff, #2e1f47 — Violet and pink on lilac-white: Gen-Z friendly, while the deep plum text keeps it legible. — tool: https://brandsweets.com/palettes/new/8b5cf6-c4b5fd-f472b6-faf7ff-2e1f47 — collection: https://brandsweets.com/palettes/playful

## 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/815ef3-aa9cc4-dfbb4e-291f2d-e9ebf1?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: "#815ef3" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.