Red Blood
Deep, intense crimson with serious weight

Red Blood is a dark, intense shade that carries a heavy, serious weight. Because this color is quite dim, it works best as a 10% accent rather than a full background, where it can appear muddy. Pair it with soft cream or light gray to maximize readability. The hex code for this powerful red is #660000.
About Red Blood
Wine gone dark in a cellar bottle
What does red blood mean?
Red Blood often calls up blood, old wine, and dried roses, and it commonly stands for danger, richness, and formality. Its deep, dim redness feels heavy and closed in, like a room where the light has almost gone out.
Where you see red blood
- dried blood
- red wine
- brick
- leather armchairs
- dried chilies
- roof shingles
What it works for
Use it for menus, wine labels, leather goods, and dark accent panels that need weight without brightness.
What colors go with red blood?
Cream #fffdd0Warm cream lifts the darkness and keeps the pairing soft instead of harsh.Mustard #ffdb58Mustard's yellow-orange sits near this red on the wheel, so the match stays warm.Sage #9caf88Muted sage green is red's opposite, giving contrast without shouting.Charcoal #36454fCharcoal matches this color's depth, building a dark, low-key palette.Blush #de5d83Pale blush shares the red undertone while lightening the whole scheme.
Questions about Red Blood
What is the hex code for Red Blood?
Red Blood is #660000. In RGB that is rgb(102, 0, 0), in HSL hsl(0, 100%, 20%) and in CMYK 0%, 100%, 100%, 60%.
Is #660000 suitable for large-scale UI backgrounds?
Using #660000 as a full background is generally discouraged because its low luminosity can make text difficult to read and create a murky, overwhelming visual effect. It is significantly more effective as a precise 10% accent to draw attention to specific UI elements.
Is Red Blood readable on white or black?
Red Blood has a 13.41:1 contrast ratio on white and 1.56:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it works for body text and on black it is too faint for text. Try other pairs in the contrast checker.