# #6363bf

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

## Values

- Hex: `#6363bf`
- RGB: rgb(99, 99, 191)
- HSL: hsl(240, 42%, 57%)
- OKLCH: oklch(0.545 0.14 280.7)
- Relative luminance: 0.1534
- Nearest named color: slateblue (#6a5acd, Δ 3.361) — https://brandsweets.com/colors/slateblue
- Moods: cool, modern
- Page: https://brandsweets.com/colors/6363bf

## Tints & shades

- Tints (toward white): #7272c5, #8080cb, #8f8fd1, #9d9dd7, #afafde, #bebee4, #ccccea, #dbdbf0, #e9e9f6, #f8f8fc
- Shades (toward black): #5151b8, #4444a7, #3d3d94, #353582, #2e2e70, #25255b, #1e1e48, #161636, #0d0d21, #06060e

## Harmonies

- Complementary: #bfbf63
- Analogous: #6391bf, #9163bf
- Triadic: #bf6363, #63bf63
- Split-complementary: #bf9163, #91bf63
- Tetradic: #bf6391, #bfbf63, #63bf91

## Colors that go with #6363bf

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 #6363bf: softer than #000 and cool enough to feel like part of the same palette. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Starlink (https://brandsweets.com/colors/brands/starlink-com), Disney (https://brandsweets.com/colors/brands/disney-com). — https://brandsweets.com/colors/charcoal
- **Amber** #ffbf00 [pool] — Amber is paired with #6363bf in 10 real palettes, including Warner Bros.'s brand system and Wikipedia's brand system, as the accent. Seen in: Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), NBA (https://brandsweets.com/colors/brands/nba-com), Walmart (https://brandsweets.com/colors/brands/walmart-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 13 real palettes, including Pixar's brand system and Activision's brand system put Blue beside #6363bf, as the accent. Seen in: Pixar (https://brandsweets.com/colors/brands/pixar-com), Activision (https://brandsweets.com/colors/brands/activision-com), Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), BBC (https://brandsweets.com/colors/brands/bbc-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #6363bf: 11 real palettes, including Fintech Trust and Intel's brand system, as the lead colour. Seen in: Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Intel (https://brandsweets.com/colors/brands/intel-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), General Mills (https://brandsweets.com/colors/brands/generalmills-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #6363bf: 6 real palettes, including Coca-Cola's brand system and NBA's brand system, as the supporting colour. Seen in: Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), NBA (https://brandsweets.com/colors/brands/nba-com), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Gopro (https://brandsweets.com/colors/brands/gopro-com). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #6363bf in 16 real palettes, including Marvel's brand system and Netflix's brand system, as the accent. Seen in: Marvel (https://brandsweets.com/colors/brands/marvel-com), Netflix (https://brandsweets.com/colors/brands/netflix), Ulta Beauty (https://brandsweets.com/colors/brands/ulta-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #6363bf: 7 real palettes, including Calm's brand system and Astro's brand system, as the lead colour. Seen in: Calm (https://brandsweets.com/colors/brands/calm-com), Astro (https://brandsweets.com/colors/brands/astro-build), Venmo (https://brandsweets.com/colors/brands/venmo-com), Deep Water (https://brandsweets.com/palettes/dark#deep-water). — https://brandsweets.com/colors/deepskyblue
- **Dark Olive Green** #556b2f [harmony: complementary] — Dark Olive Green sits directly opposite #6363bf 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/darkolivegreen

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

- On white (#ffffff): 5.16:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #4a4ab5 (7.15:1)
- On black (#000000): 4.07:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #6b6bc2 (4.51:1); AA: background → #f0f0f0 (4.53:1); AAA: text → #8f8fd1 (7.02:1)

## Brands using this color

- **Sentry** — secondary #6a5fc1 (Δ 1.427) — https://brandsweets.com/colors/brands/sentry-io
- **Marvel** — primary #6769bc (Δ 1.87) — https://brandsweets.com/colors/brands/marvel-com

## 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/6363bf-a19cc4-df994e-251f2d-e9edf1?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: "#6363bf" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.