Blood Red

Deep crimson, impactful muted primary red

HEX#660000

RGBrgb(102, 0, 0)

HSLhsl(0, 100%, 20%)

HSVhsv(0, 100%, 40%)

CMYKcmyk(0%, 100%, 100%, 60%)

HEXA#660000FF

RGBArgba(102, 0, 0, 1)

HSLAhsla(0, 100%, 20%, 1)

OKLCHoklch(46.3%, 0.19, 29)

LCHlch(35%, 72.8, 42)

🎨 Color Palettes

Analogous2-3 adjacent hues (≤60°)

Triadic3 hues spaced 120° apart

Split ComplementaryMain color + colors adjacent to its complement

Complementary2 hues spaced 180° apart

Tetradic (Rectangle)4 hues forming a rectangle

MonochromaticSingle hue with varying saturation and lightness

♿ WCAG Contrast Colors

Learn More →

Aa14px Body

High Contrast Text

#FFA3A3Ratio 7:1AAA

Suitable for body text, headings, and primary content, ensuring readability for all users

Aa14px Body

Standard Text

#EB7500Ratio 4.5:1AA

Suitable for regular body content, meeting WCAG AA standards

Aa14px Body

Large Text / UI Components

#7A7A00Ratio 2.9:1Fail

Suitable for large text (≥18px bold or ≥24px), icons, UI component boundaries

Aa14px Body

Decorative / Dividers

#006B00Ratio 2:1Fail

Suitable for decorative elements, dividers, non-essential text

📊 Color Scales

Online Color Picker → Gradient Generator →

Lightness VariationFixed hue and saturation, proportional lightness scaling 30%→100%

#1F0000

#290000

#380000

#420000

#4D0000

#5C0000

#660000

Saturation VariationFixed hue and lightness, proportional saturation scaling 40%→100%

#471F1F

#4D1919

#521414

#570F0F

#5C0A0A

#610505

#660000

Lightness + Saturation Mixed VariationSimultaneous lightness and saturation proportional scaling

#140B0B

#1D0C0C

#2B0D0D

#370C0C

#440909

#560606

#660000

Hue Fine-TuningFixed saturation and lightness, stepwise hue fine-tuning ±15°

#660019

#660011

#660008

#660000

#660900

#661100

#661A00

💡 Use Cases

🎬

Horror Cinema

Tone for thriller opening credits and posters; paired with montage sequences to build suspense and psychological terror.

🎸

Heavy Metal Culture

Signature color for rock and death metal merchandise, expressing anger, rebellion and destructive musical attitudes.

📖

Gothic Literature

Headband and endpaper shade for hardcover dark fiction, amplifying dark ceremonial sensations during reading.

🕹️

AAA Video Games

UI and warning color for Soulslike and Lovecraftian games, triggering players’ survival instincts amid high-difficulty gameplay.

📜 Origin & History

Blood Red stands as the source of taboo and worship across human civilizations. Within primitive tribal hunting and rituals, blood represented transference of life force. Paleolithic cave painters mixed animal blood with ochre powder to outline bison; blood formed humanity’s earliest medium for art and faith.

In Ancient Rome, epileptics competed to consume gladiators’ spilled blood, believing it cured ailments. Blood Red also served as base color for legion banners. Murals at bull-sacrifice altars within Mithraic temples extensively employed rich crimson as the core hue for underground mystery ceremonies.

Medieval alchemists viewed dark blood-red solution as the threshold for successfully crafting the Philosopher’s Stone. This opaque profound red became the ultimate cipher in alchemical manuscripts, seen as the transition point where inert matter achieves immortal revival.

Within Victorian Gothic novels, Blood Red frequently appeared on book gilded covers and illustrations. Whether Count Dracula’s domain or Dr Jekyll’s laboratory, this somber crimson accompanied fascination with death, obsession for immortality and introspection over human nature.

Modern film productions such as There Will Be Blood and The Silence of the Lambs deploy #660000 filters to adjust overall texture for oppressive, suffocating dark atmospheres. It is a dramatically charged, narrative-rich dangerous shade depicting humanity’s darkest hidden realms.

🧠 Color Psychology

Forbidding DeterrenceStaring at Blood Red resembles confronting primal trauma within life, instantly triggering instinctive avoidance and vigilance. It carries formidable territorial warning power and inviolable gravity.

Root of LifeBlood signifies birth, injury and mortality. This color directly touches humanity’s genetic core questions of survival and destruction, probing ultimate themes of life and death.

Tragic DestinyEvokes inescapable fate reminiscent of ancient Greek tragedy. It embodies sublime resolve to march forward despite foreseen endings, bearing grand epic temperament.

Vengeful ObsessionThe hue of hatred congealed within veins. It represents morbid psychological fixation, embodying unyielding determination and desperate readiness for mutual destruction while settling scores.

Dark TemptationDistinctive corrupt allure of dark aesthetics, like tarnished wings. Though signaling danger ahead, it arouses excitement and satisfies curiosity toward humanity’s shadow side.

Extreme RestraintThe final state of blood before coagulating into black. It symbolizes endurance of extreme suffering. Before outburst, all energy is intensely compressed, building palpable, explosive tension.

← Back to Explore Colors