# #5b618b

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

## Values

- Hex: `#5b618b`
- RGB: rgb(91, 97, 139)
- HSL: hsl(233, 21%, 45%)
- OKLCH: oklch(0.505 0.067 277.4)
- Relative luminance: 0.1264
- Nearest named color: Berry Jam (#655883, Δ 2.801) — https://brandsweets.com/colors/berry-jam
- Moods: cool, muted
- Page: https://brandsweets.com/colors/5b618b

## Tints & shades

- Tints (toward white): #656b9a, #777da6, #878cb0, #969abb, #a9acc7, #b8bbd1, #c7cadb, #d7d9e5, #e9eaf1, #f9f9fb
- Shades (toward black): #53587f, #4b4f72, #424766, #3a3e59, #32354d, #282b3e, #202231, #181a25, #101119, #08090c

## Harmonies

- Complementary: #8b855b
- Analogous: #5b788b, #6d5b8b
- Triadic: #8b5b60, #608b5b
- Split-complementary: #8b6d5b, #788b5b
- Tetradic: #8b5b78, #8b855b, #5b8b6d

## Colors that go with #5b618b

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 #5b618b: softer than #000 and cool enough to feel like part of the same palette. Seen in: Harbour (https://brandsweets.com/palettes/cool#harbour), Campus (https://brandsweets.com/palettes/friendly#campus), Amazon (https://brandsweets.com/colors/brands/amazon-com), Hinge (https://brandsweets.com/colors/brands/hinge-co). — https://brandsweets.com/colors/charcoal
- **Amber** #ffbf00 [pool] — Amber is paired with #5b618b in 6 real palettes, including McDonald's's brand system and Lemon Squeezy's brand system, as the lead colour. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Wired (https://brandsweets.com/colors/brands/wired-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 4 real palettes, including Activision's brand system and Pixar's brand system put Blue beside #5b618b, as the accent. Seen in: Activision (https://brandsweets.com/colors/brands/activision-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), CVS (https://brandsweets.com/colors/brands/cvs-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #5b618b: 7 real palettes, including Fintech Trust and Ink & Paper, as the lead colour. Seen in: Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Ink & Paper (https://brandsweets.com/palettes/minimal#ink-and-paper), Glacier (https://brandsweets.com/palettes/cool#glacier), General Mills (https://brandsweets.com/colors/brands/generalmills-com). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #5b618b in 17 real palettes, including Retro Pop and Marvel's brand system, as the lead colour. Seen in: Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Marvel (https://brandsweets.com/colors/brands/marvel-com), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #5b618b: 11 real palettes, including The New York Times's brand system and Campus, as the supporting colour. Seen in: The New York Times (https://brandsweets.com/colors/brands/nytimes-com), Campus (https://brandsweets.com/palettes/friendly#campus), HP (https://brandsweets.com/colors/brands/hp-com), Dutch Bros (https://brandsweets.com/colors/brands/dutchbros-com). — https://brandsweets.com/colors/denim
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #5b618b: 6 real palettes, including Wendy's's brand system and AT&T's brand system, as the supporting colour. Seen in: Wendy's (https://brandsweets.com/colors/brands/wendys-com), AT&T (https://brandsweets.com/colors/brands/att-com), Honda (https://brandsweets.com/colors/brands/honda-com), Newsprint (https://brandsweets.com/palettes/editorial#newsprint). — https://brandsweets.com/colors/firebrick
- **Dark Olive Green** #556b2f [harmony: complementary] — Dark Olive Green sits directly opposite #5b618b 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): 5.95:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #51567b (7.08:1)
- On black (#000000): 3.53:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #6e74a0 (4.67:1); AA: background → #e0e0e0 (4.51:1); AAA: text → #9094b6 (7.1:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/5b618b-9c9cc4-df884e-241f2d-e9eef1?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: "#5b618b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.