Named color

Arctic

#648589

hex#648589

rgbrgb(100, 133, 137)

hslhsl(186, 16%, 46%)

oklchoklch(0.593 0.038 205.4)

Relative luminance 0.2129

Cool Muted

Open in palette tool Check contrast

Arctic on this page is the real value, not a screenshot: exact hex, RGB, HSL and OKLCH, ten tints and ten shades, classic harmonies, and WCAG contrast with fixes — plus the curated palettes it appears in and any public brand that adopts it.

Tints & shades

Tints — toward white

6e9296 7d9da1 8fabae 9db6b8 acc1c3 bbccce cad7d8 dce4e5 eaeff0 f9fbfb

Shades — toward black

5a797c 516d70 475f62 3e5356 36484a 2d3c3e 243132 1a2323 111718 090c0c

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

648589 886663

#886663

Analogous

Open in tool →

648589 638879 637288

#638879 · #637288

Triadic

Open in tool →

648589 886384 848863

#886384 · #848863

Split-complementary

Open in tool →

648589 886372 887963

#886372 · #887963

Tetradic

Open in tool →

648589 796388 886663 728863

#796388 · #886663 · #728863

Contrast

Arctic as text	Ratio	AA	AA large	AAA	Fix
Aaon white	3.99:1	fail	pass	fail	AA: use #5c7c7f as the text (4.52:1) AAA: use #455c5f as the text (7.12:1) AA: or shift the background to #141414 (4.61:1)
Aaon black	5.26:1	pass	pass	fail	AAA: use #7a9b9f as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with Arctic as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around Arctic

live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp

claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp

try this prompt

›analyze #648589 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/648589-a2b8be-df4e86-1f262d-e9f1ee?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md