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Color Directory/Black Opal

Black Opal (#1C2833)

Luminance: 2% · Nearest standard name: Black Opal

Generate Around This Color
BLACK OPAL
#1C2833
rgb(28, 40, 51) · hsl(209°, 29%, 15%)
HEX#1C2833
RGB28, 40, 51
HSL209°, 29%, 15%
HSV / HSB209°, 45%, 20%
CMYK (Print)45%, 22%, 0%, 80%

Color Harmonies

Complementary

#1C2833#31261B

Analogous

#1B3131#1C2833#1B1C31

Triadic

#1C2833#311B27#27311B

Tints & Shades

Lighter Tints
Darker Shades

WCAG 2.2 Contrast Verification

Against White (#FFFFFF)14.99:1

Sample text rendered with #1C2833 on white

AA Normal: PASSAA Large: PASS
Against Dark (#0F172A)1.19:1

Sample text rendered with #1C2833 on dark

AA Normal: FAILAA Large: FAIL

Palettes Featuring Similar Tones

#0F172ACopy
#1E293BCopy
#2563EBCopy
#38BDF8Copy
#F8FAFCCopy
cp-featured-01Technology
SaaS Velocity Blue
TechModernCool
#2B0938Copy
#6A0572Copy
#AB2E64Copy
#D85A52Copy
#F9A03FCopy
cp-featured-02Sunset
Malibu Dusk Glow
SunsetGradientCreative
#E76F51Copy
#F4A261Copy
#E9C46ACopy
#2A9D8FCopy
#264653Copy
cp-featured-03Vintage
1970s California Sun
VintageRetroWarm
#050505Copy
#00FF66Copy
#00F0FFCopy
#FF0055Copy
#FFE600Copy
cp-featured-04Gaming
Cyber Glitch Protocol
GamingFuturisticNeon
Comprehensive Color Profile & Design Architecture

The Complete Color Guide to Black Opal (#1C2833)

Black Opal (#1C2833) is a distinct shade within the Blue chromatic spectrum. Characterized by an optical luminance of 2% and a cool 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#1C2833
RGB Space28, 40, 51
HSL Values209°, 29%, 15%
HSV / HSB209°, 45%, 20%
CMYK Ink45%, 22%, 0%, 80%
TemperatureCool

Optical Color Harmony Formulas for Black Opal

Geometric intervals calculated from #1C2833 on the 360-degree color wheel.

Direct Polar (180°)#31261B

Complementary Harmony

Pairs Black Opal with its polar opposite (#31261B) to create maximum optical contrast, perfect for high-converting call-to-action buttons.

Adjacent (±30°)#1B3131 · #1B1C31

Analogous Harmony

Positions adjacent neighboring hues on either side of Black Opal for serene, gentle, and organic visual transitions.

Split Angles (150° / 210°)#311B1C · #31311B

Split-Complementary

Uses the two colors flanking the direct complement of Black Opal, offering rich visual variety without harsh chromatic vibration.

Triangular (120°)#311B27 · #27311B

Triadic Harmony

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

Rectangular (90°)#311B31 · #31261B · #1C311B

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 Black Opal

Lock #1C2833 inside our interactive generator to calculate live matching palettes in real time.

Launch Palette Generator

The 60-30-10 UI Implementation Role for Black Opal

Recommended proportional volume and semantic interface assignment.

Recommended Assignment: High-Contrast Dark Canvas / Typographic Anchor (30% to 60% Volume)

With a deep, low lightness of 15%, Black Opal (#1C2833) provides structural weight for primary headings, body copy, and dark mode background canvases, delivering superior readability against light elements.

Light Mode SurfaceIdeal for buttons and badges
Dark Mode AdaptationOptimal dark canvas backdrop
Tonal Expansion ScaleView 10-step design token ramp →

Color Psychology & Industry Alignment

Strategic cognitive triggers and target sector recommendations.

Cognitive & Emotional Perception

Blends the freshness of green with the serene trust of blue. Inspires crisp clarity, modern innovation, and refreshing agility.

Optimal Industry Verticals

Bio-Tech, Digital Telecommunications, Modern SaaS, Productivity Apps. Combining Black Opal with intentional neutral whitespace reinforces authority and conversion clarity.

Production Code Tokens for Black Opal

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

CSS Custom Properties (:root)Vanilla CSS
:root {
  --color-1c2833: #1C2833;
  --color-1c2833-rgb: 28, 40, 51;
  --color-1c2833-hsl: 209deg 29% 15%;
}
tailwind.config.jsTailwind CSS
module.exports = {
  theme: {
    extend: {
      colors: {
        '1c2833': '#1C2833',
      }
    }
  }
};

Explore Related Color Tools for Black Opal

Continue developing your color system with specialized design tools.

Palette Generator

Generate harmonious 5-color palettes anchored to Black Opal.

Launch Tool

WCAG Contrast Checker

Verify Level AA and AAA readability for Black Opal against any background.

Check Contrast

Shades & Tints Scale

Generate a full 10-step tonal scale from 50 to 900 for Black Opal.

Expand Scale

CSS Gradient Generator

Create linear and radial gradients blending Black Opal with complementary hues.

Build Gradients

Frequently Asked Questions About Black Opal (#1C2833)

Authoritative answers covering Black Opal color codes, WCAG contrast compliance, and UI design systems.

What are the exact digital and print color codes for Black Opal (#1C2833)?
Black Opal is defined by the HEX code #1C2833. Its digital screen RGB coordinates are R:28, G:40, B:51. Its cylindrical HSL values are Hue:209°, Saturation:29%, Lightness:15%. In HSV/HSB format, it is 209°, 45%, 20%. For four-color CMYK process printing, its ink percentages are C:45%, M:22%, Y:0%, K:80%.
Does Black Opal (#1C2833) pass WCAG 2.2 accessibility standards for text readability?
Against a pure white (#FFFFFF) background, Black Opal achieves a contrast ratio of 14.99:1 (Passing WCAG AA for normal body text, and Passing for large headings). Against dark slate (#0F172A), it achieves a contrast ratio of 1.19:1 (Failing WCAG AA).
What is the direct complementary color for Black Opal (#1C2833)?
The exact 180-degree optical complementary color for #1C2833 is #31261B. When placed side-by-side, #1C2833 and #31261B create maximum visual tension and high click-through conversion rates.
What is the recommended role for Black Opal in the 60-30-10 UI design rule?
With a deep, low lightness of 15%, Black Opal (#1C2833) provides structural weight for primary headings, body copy, and dark mode background canvases, delivering superior readability against light elements.
How can I copy and export Black Opal into Tailwind CSS and CSS variables?
You can define Black Opal in CSS custom properties as ':root { --color-custom: #1C2833; }' or paste it into your 'tailwind.config.js' file under 'theme.extend.colors'. You can also generate full palettes containing Black Opal using our interactive Color Palette Generator.
Which color family does Black Opal (#1C2833) belong to?
Black Opal belongs to the Blue family (Cool spectrum). You can explore full tonal ramps and curated palettes in our Blue Color Guide.