# #4c8a90

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

## Values

- Hex: `#4c8a90`
- RGB: rgb(76, 138, 144)
- HSL: hsl(185, 31%, 43%)
- OKLCH: oklch(0.594 0.065 203.7)
- Relative luminance: 0.2173
- Nearest named color: Arctic (#648589, Δ 2.707) — https://brandsweets.com/colors/arctic
- Moods: cool, muted
- Page: https://brandsweets.com/colors/4c8a90

## Tints & shades

- Tints (toward white): #569da4, #65a8ae, #79b3b9, #8abdc1, #9ec8cc, #afd2d5, #c3dddf, #d4e6e8, #e8f2f3, #f8fbfb
- Shades (toward black): #457d82, #3e7075, #376368, #30575a, #2a4d50, #234043, #1c3335, #152728, #0e1a1b, #070d0d

## Harmonies

- Complementary: #90514c
- Analogous: #4c9073, #4c6890
- Triadic: #904c8a, #8a904c
- Split-complementary: #904c68, #90734c
- Tetradic: #734c90, #90514c, #68904c

## Colors that go with #4c8a90

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 #4c8a90: softer than #000 and cool enough to feel like part of the same palette. Seen in: Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Bloomberg (https://brandsweets.com/colors/brands/bloomberg-com), Hermès (https://brandsweets.com/colors/brands/hermes-com). — https://brandsweets.com/colors/charcoal
- **Copper** #b87333 [harmony, pool: split] — Copper is a split-complement of #4c8a90: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Riverbed (https://brandsweets.com/palettes/muted#riverbed), Wellness (https://brandsweets.com/palettes/warm#wellness), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty), Atelier (https://brandsweets.com/palettes/elegant#atelier). — https://brandsweets.com/colors/copper
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #4c8a90: 5 real palettes, including Ink & Paper and Intel's brand system, as the accent. Seen in: Ink & Paper (https://brandsweets.com/palettes/minimal#ink-and-paper), Intel (https://brandsweets.com/colors/brands/intel-com), Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #4c8a90 in 9 real palettes, including Redfin's brand system and Retro Pop, as the lead colour. Seen in: Redfin (https://brandsweets.com/colors/brands/redfin-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Diner (https://brandsweets.com/palettes/vivid#diner), Wendy's (https://brandsweets.com/colors/brands/wendys-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #4c8a90: 13 real palettes, including Peacock and Campus, as the supporting colour. Seen in: Peacock (https://brandsweets.com/palettes/vivid#peacock), Campus (https://brandsweets.com/palettes/friendly#campus), Discover (https://brandsweets.com/colors/brands/discover-com), Intel (https://brandsweets.com/colors/brands/intel-com). — https://brandsweets.com/colors/denim
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #4c8a90: 4 real palettes, including Newsprint and Wendy's's brand system, as the lead colour. Seen in: Newsprint (https://brandsweets.com/palettes/editorial#newsprint), Wendy's (https://brandsweets.com/colors/brands/wendys-com), Honda (https://brandsweets.com/colors/brands/honda-com), AT&T (https://brandsweets.com/colors/brands/att-com). — https://brandsweets.com/colors/firebrick
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #4c8a90 in 5 real palettes, including Ledger Dark and Noir Beauty, as the lead colour. Seen in: Ledger Dark (https://brandsweets.com/palettes/dark#ledger-dark), Noir Beauty (https://brandsweets.com/palettes/dark#noir-beauty), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), Mid-Century (https://brandsweets.com/palettes/warm#mid-century). — https://brandsweets.com/colors/goldenrod
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #4c8a90 in 4 real palettes, including Indigo SaaS and Fintech Trust, as the accent. Seen in: Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Olympics (https://brandsweets.com/colors/brands/olympics-com), Undergrowth (https://brandsweets.com/palettes/dark#undergrowth). — https://brandsweets.com/colors/mediumseagreen

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

- On white (#ffffff): 3.93:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #457d82 (4.66:1); AA: background → #171717 (4.56:1); AAA: text → #335d61 (7.29:1)
- On black (#000000): 5.35:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #58a0a7 (7:1)

## Curated palettes containing it

- **Rain Garden** (spring, cool, muted, calm) — #4f8a8b, #a5c9a1, #f2b5a7, #f6f9f7, #1f3331 — Wet-leaf teal and moss with a soft peach — an overcast spring, calmer than the bright version and better for long reading. — tool: https://brandsweets.com/palettes/new/4f8a8b-a5c9a1-f2b5a7-f6f9f7-1f3331 — collection: https://brandsweets.com/palettes/spring

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/4c8a90-a2b8be-df4e88-1f262d-e9f1ee?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: "#4c8a90" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.