Is Shinku Deep Red (#A51A35) accessible for digital body text?

Against a pure white background (#FFFFFF), #A51A35 achieves a contrast ratio of 7.50:1 (Passing WCAG AA normal text). Against a dark slate background (#0F172A), it achieves a contrast ratio of 2.38:1 (Failing WCAG AA normal text).

Which color harmonies pair best with Shinku Deep Red?

The exact complementary color for #A51A35 is #19A388. For analogous pairings, use #A3197A and #A34319. You can explore these combinations further in our Color Harmony Generator.

Color Directory/Shinku Deep Red

Shinku Deep Red (#A51A35)

Q: What are the exact digital and print color codes for Shinku Deep Red (#A51A35)?

Shinku Deep Red has the HEX code #A51A35. In RGB color coordinates, its values are 165, 26, 53. In HSL, it is 348°, 73%, 37%. In CMYK print values, it corresponds to C:0% M:84% Y:68% K:35%.

Luminance: 9% · Nearest standard name: Shinku Deep Red

Generate Around This Color

SHINKU DEEP RED

#A51A35

rgb(165, 26, 53) · hsl(348°, 73%, 37%)

HEX#A51A35

RGB165, 26, 53

HSL348°, 73%, 37%

HSV / HSB348°, 84%, 65%

CMYK (Print)0%, 84%, 68%, 35%

Color Harmonies

Complementary

#A51A35#19A388

Analogous

#A3197A#A51A35#A34319

Triadic

#A51A35#35A319#1935A3

Tints & Shades

Lighter Tints

Darker Shades

WCAG 2.2 Contrast Verification

Against White (#FFFFFF)7.50:1

Sample text rendered with #A51A35 on white

AA Normal: PASSAA Large: PASS

Against Dark (#0F172A)2.38:1

Sample text rendered with #A51A35 on dark

AA Normal: FAILAA Large: FAIL

Palettes Featuring Similar Tones

cp-featured-01Technology

TechModernCool

cp-featured-02Sunset

SunsetGradientCreative

cp-featured-03Vintage

VintageRetroWarm

cp-featured-04Gaming

Cyber Glitch Protocol

GamingFuturisticNeon

Comprehensive Color Profile & Design Architecture

The Complete Color Guide to Shinku Deep Red (#A51A35)

Shinku Deep Red (#A51A35) is a distinct shade within the Rose & Red chromatic spectrum. Characterized by an optical luminance of 9% and a warm color temperature, this tone plays a vital role across web applications, brand identities, and editorial typography. Discover its mathematical harmonies, accessibility metrics, UI engineering roles, and front-end code tokens.

Technical Colorimetry & Coordinate Breakdown

Exact mathematical values across digital display, print press, and human perceptual spaces.

HEX Code#A51A35

RGB Space165, 26, 53

HSL Values348°, 73%, 37%

HSV / HSB348°, 84%, 65%

CMYK Ink0%, 84%, 68%, 35%

TemperatureWarm

Optical Color Harmony Formulas for Shinku Deep Red

Geometric intervals calculated from #A51A35 on the 360-degree color wheel.

Direct Polar (180°)#19A388

Complementary Harmony

Pairs Shinku Deep Red with its polar opposite (#19A388) to create maximum optical contrast, perfect for high-converting call-to-action buttons.

Adjacent (±30°)#A3197A · #A34319

Analogous Harmony

Positions adjacent neighboring hues on either side of Shinku Deep Red for serene, gentle, and organic visual transitions.

Split Angles (150° / 210°)#19A343 · #197AA3

Split-Complementary

Uses the two colors flanking the direct complement of Shinku Deep Red, offering rich visual variety without harsh chromatic vibration.

Triangular (120°)#35A319 · #1935A3

Triadic Harmony

Forms an equilateral triangle on the color wheel, generating playful, dynamic energy when balanced against a neutral background.

Rectangular (90°)#7AA319 · #19A388 · #4319A3

Tetradic (Square) Harmony

A rich four-color scheme combining two complementary pairs, ideal for complex dashboards, gaming HUDs, and multi-tier charts.

Interactive Exploration

Build Palettes With Shinku Deep Red

Lock #A51A35 inside our interactive generator to calculate live matching palettes in real time.

Launch Palette Generator

The 60-30-10 UI Implementation Role for Shinku Deep Red

Recommended proportional volume and semantic interface assignment.

Recommended Assignment: Interactive Brand Accent (10% Volume)

With a saturation of 73% and lightness of 37%, Shinku Deep Red (#A51A35) acts as an attention-grabbing focal point. In user interfaces, reserve it for primary CTA buttons, active state indicators, and notification badges to draw user clicks immediately.

Light Mode SurfaceIdeal for buttons and badges

Dark Mode AdaptationDesaturate slightly for ambient glow

Tonal Expansion ScaleView 10-step design token ramp →

Color Psychology & Industry Alignment

Strategic cognitive triggers and target sector recommendations.

Cognitive & Emotional Perception

Radiates high energy, urgency, passionate emotion, and dramatic visual power. Commands immediate human attention.

Optimal Industry Verticals

E-Commerce Flash Sales, Fitness Apparel, Gaming HUDs, Food & Beverage. Combining Shinku Deep Red with intentional neutral whitespace reinforces authority and conversion clarity.

Production Code Tokens for Shinku Deep Red

Drop-in design system tokens for CSS, Tailwind CSS, and SCSS.

CSS Custom Properties (:root)Vanilla CSS

:root {
  --color-a51a35: #A51A35;
  --color-a51a35-rgb: 165, 26, 53;
  --color-a51a35-hsl: 348deg 73% 37%;
}

tailwind.config.jsTailwind CSS

module.exports = {
  theme: {
    extend: {
      colors: {
        'a51a35': '#A51A35',
      }
    }
  }
};

Explore Related Color Tools for Shinku Deep Red

Continue developing your color system with specialized design tools.

Palette Generator

Generate harmonious 5-color palettes anchored to Shinku Deep Red.

Launch Tool

WCAG Contrast Checker

Verify Level AA and AAA readability for Shinku Deep Red against any background.

Check Contrast

Shades & Tints Scale

Generate a full 10-step tonal scale from 50 to 900 for Shinku Deep Red.

Expand Scale

CSS Gradient Generator

Create linear and radial gradients blending Shinku Deep Red with complementary hues.

Build Gradients

Frequently Asked Questions About Shinku Deep Red (#A51A35)

Authoritative answers covering Shinku Deep Red color codes, WCAG contrast compliance, and UI design systems.

What are the exact digital and print color codes for Shinku Deep Red (#A51A35)?

Shinku Deep Red is defined by the HEX code #A51A35. Its digital screen RGB coordinates are R:165, G:26, B:53. Its cylindrical HSL values are Hue:348°, Saturation:73%, Lightness:37%. In HSV/HSB format, it is 348°, 84%, 65%. For four-color CMYK process printing, its ink percentages are C:0%, M:84%, Y:68%, K:35%.

Does Shinku Deep Red (#A51A35) pass WCAG 2.2 accessibility standards for text readability?

Against a pure white (#FFFFFF) background, Shinku Deep Red achieves a contrast ratio of 7.50:1 (Passing WCAG AA for normal body text, and Passing for large headings). Against dark slate (#0F172A), it achieves a contrast ratio of 2.38:1 (Failing WCAG AA).

What is the direct complementary color for Shinku Deep Red (#A51A35)?

The exact 180-degree optical complementary color for #A51A35 is #19A388. When placed side-by-side, #A51A35 and #19A388 create maximum visual tension and high click-through conversion rates.

What is the recommended role for Shinku Deep Red in the 60-30-10 UI design rule?

How can I copy and export Shinku Deep Red into Tailwind CSS and CSS variables?

You can define Shinku Deep Red in CSS custom properties as ':root { --color-custom: #A51A35; }' or paste it into your 'tailwind.config.js' file under 'theme.extend.colors'. You can also generate full palettes containing Shinku Deep Red using our interactive Color Palette Generator.

Which color family does Shinku Deep Red (#A51A35) belong to?

Shinku Deep Red belongs to the Rose & Red family (Warm spectrum). You can explore full tonal ramps and curated palettes in our Rose & Red Color Guide.