Sinopia

HEX: #CB410B | Modern Palette

On White
4.88:1
PASS
On Black
4.30:1
FAIL

Color Specifications

HEX
#CB410B
RGB
203, 65, 11
HSL
16°, 89% ,42%
CMYK
0, 68, 95, 20

About Sinopia

Sinopia (#CB410B) is a color with RGB(203, 65, 11) and HSL(16.9°, 89.7%, 42%). It is commonly associated with Energetic, Bold moods. In design, it fits Vivid, Warm styles and is suitable for Text, Button, Accent. Its complementary color is #0B95CB, which creates strong contrast. Its triadic palette includes #0BCB41 and #410BCB. The name comes from Σινώπη (Sinōpē) (Greek).

  • HEX: #CB410B
  • RGB: 203, 65, 11
  • HSL: 16.9°, 89.7%, 42%
  • Mood: Energetic, Bold
  • Style: Vivid, Warm
  • Use case: Text, Button, Accent
  • Complementary color: #0B95CB
  • Triadic colors: #0BCB41, #410BCB
  • The name comes from Σινώπη (Sinōpē) (Greek).

Live Components

LIGHT
DARK
System Notification Box

Color Palettes

Monochromatic Five tones of the same hue — a reliable scale for backgrounds, surfaces, and text.
Neutral + Accent Four near-neutral tones grounded by a saturated accent — clean and versatile for UI.
Analogous Five hues drifting across a 60° arc — naturally harmonious and pleasing to the eye.
3 + 1 + 1 Three analogous base colors, one complementary accent, one dark anchor — bold yet balanced.

Color Harmonies

Complementary

The color directly opposite on the color wheel — creates maximum contrast and vibrance.

Analogous

Colors adjacent on the wheel — naturally harmonious and pleasing to the eye.

Triadic

Three colors equally spaced 120° apart — bold, balanced, and visually rich.

Split-Complementary

Two colors flanking the complement — high contrast with less tension than full complementary.

Tetradic (Square)

Four colors at 90° intervals — rich variety, best when one color dominates.

Monochromatic

Shades and tints of the same hue — cohesive, elegant, and easy to work with.

Shades & Tints

A seamless scale of #CB410B from deepest shade to lightest tint.

Color Characteristics

Style
Vivid Warm
Use case
Text Button Accent

Accessibility Simulation

Deuteranopia #7F7F00
Protanopia #5E5E11
Tritanopia #CC3D3D
Achromatopsia #717171

Frequently Asked Questions

Sinopia (#CB410B) is a color with RGB(203, 65, 11) and HSL(16.9°, 89.7%, 42%).

#CB410B pairs strongly with #0B95CB as its complementary color. It can also be used with neutral tones for balanced UI and design layouts.

#CB410B is suitable for Text, Button, Accent and works well with Vivid, Warm styles.

#CB410B is commonly associated with Energetic, Bold.

The name Sinopia is linked to Σινώπη (Sinōpē) from Greek, meaning From the city of Sinope, an ancient city on the Black Sea coast of Anatolia (modern-day Turkey), which was famous for its red earth pigment..

Name, History & Etymology

Origin Word Σινώπη (Sinōpē)
Meaning From the city of Sinope, an ancient city on the Black Sea coast of Anatolia (modern-day Turkey), which was famous for its red earth pigment.
Language Greek
First Recorded Use Antiquity (Ancient Greece/Rome)

History

Sinopia refers to a reddish-brown natural earth pigment, primarily hematite, known since antiquity. It was highly valued by the Greeks and Romans and later by medieval and Renaissance artists. Its most famous application in art history is as the underdrawing for frescoes. Before applying the final fresco layers, artists would sketch their compositions directly onto the arriccio (the first layer of plaster) using sinopia pigment, often mixed with water. These underdrawings are called 'sinopie' (plural). When frescoes are detached from walls for preservation, these sinopie are sometimes revealed and preserved as artworks in their own right, offering unique insights into the artist's creative process. The city of Sinope was a major source and trading hub for this pigment.

First Recorded Use

The term 'sinopia' (or similar variations like 'sinoper') for the pigment dates back to ancient times, as evidenced by texts from Pliny the Elder and Theophrastus.

Cultural Associations

The term 'sinopia' has a dual meaning in art history: it refers to both the pigment itself and, more specifically, to the underdrawing made with that pigment on the arriccio layer of a fresco. The discovery and preservation of sinopie during fresco detachments in the mid-20th century (particularly after the 1966 Florence flood) led to a greater appreciation of these preparatory drawings as distinct works of art, revealing the master's hand before the final painting.

Similar Named Colors

Mahogany #C04000 ΔE 2.75
Rust #B7410E ΔE 4.07
Vermilion #D9381E ΔE 5.15
Dark Pastel Red #C23B22 ΔE 5.51

Code Snippets

/* Background */
.element {
    background-color: #CB410B;
}

/* Text */
.element {
    color: #CB410B;
}

/* Border */
.element {
    border: 1px solid #CB410B;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #CB410B,
        #0B95CB
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #CB410B,
        #0B95CB
    );
}

// SCSS variable
$sinopia: #CB410B;

// With RGB channels (useful for rgba() usage)
$sinopia-r: 203;
$sinopia-g: 65;
$sinopia-b: 11;

// Usage
.element {
    background-color: $sinopia;
    color: rgba($sinopia-r, $sinopia-g, $sinopia-b, 0.8);
}