Terminal
Open in tool →Green for success, blue for links, pink for emphasis — the dark-mode developer family, tuned to sit on near-black without glare.
Color
#100c17
#100c17
hex
#100c17rgb
rgb(16, 12, 23)hsl
hsl(262, 31%, 7%)oklch
oklch(0.165 0.023 300.6)Closest name: Midnight Oil (#0b0c14)Relative luminance 0.0043
Colors that go with #100c17
Charcoal, Amber and Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Charcoal #36454f
neutralshippedCharcoal is the text near-black that reads cleanly against #100c17 without the hard edge of pure #000.
Amber #ffbf00
shippedAmber is paired with #100c17 in 18 real palettes, including Lemon Squeezy's brand system and Ahrefs's brand system, as the lead colour.
Blue #0000ff
shipped20 real palettes, including native Cybersecurity's brand system and EA's brand system put Blue beside #100c17, as the accent.
Blue Violet #8a2be2
shippedBlue Violet is paired with #100c17 in 10 real palettes, including Gemstone and Twitch's brand system, as the supporting colour.
Brown #a52a2a
shipped4 real palettes, including Velvet and State Farm's brand system put Brown beside #100c17, as the lead colour.
Burgundy #800020
shipped4 real palettes, including Mailchimp's brand system and Rare Beauty's brand system put Burgundy beside #100c17, as the accent.
Burlywood #deb887
shippedBurlywood is paired with #100c17 in 4 real palettes, including Velvet and Coffee Bar, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #100c17: 7 real palettes, including Estate and Arctic, as the supporting colour.
Real palettes that use #100c17
Tints & shades
Harmonies
Contrast
| #100c17 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 19.32:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.09:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #100c17 as the background.
Brands using this color
Palettes built around it
Midnight Luxe
Open in tool →Champagne gold on ink-navy with a violet undertone — hotels and spirits use it because it reads expensive at any size.
Velvet
Open in tool →Burgundy and plum on near-black with a brass accent — theatre, wine, and anything that wants to feel after-dark.
Arcade
Open in tool →Hot pink, cyan and acid yellow on near-black — cabinet-glow neon; the black surface is what makes the colours light up.
Night Market
Open in tool →Orange, magenta and yellow neon on aubergine-black — the street-sign palette for food, nightlife and events.
Gemstone
Open in tool →Emerald, amethyst and ruby on velvet-black — the jewel-tone trio; the surface must be dark or the stones go plastic.
Fonts for this mood
#100c17 reads as cool, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #100c17
live endpointPoint any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #100c17 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/100c17-af9cc4-dfce4e-2a1f2d-e9eaf1?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md