Color #1D2C81 Color / Colour Code #1D2C81
This page shows the hex color code for color #1d2c81 (#1D2C81). The colour is a blue tone with 63% saturation and 31% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #1D2C81 against common backgrounds.
Complementary Colors
#1D2C81 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 201, 231, and 261 degrees for harmonious combinations.
Triadic Palette
Three colors at 231, 351, and 111 degrees.
Color Palettes Using #1D2C81
Five shades at lightness levels 15% through 85% while keeping hue at 231 and saturation at 63%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 231 to 276 degrees create a warm, unified palette. This analogous scheme works for marketing materials, seasonal campaigns, and any design that needs visual warmth without clashing colors.
Combines the base color at hue 231 with its complement at 51 and two adjacent cool tones. This split-complementary approach provides strong visual contrast while remaining more balanced than a pure complementary scheme.
Five evenly spaced hues at 40% saturation and 80% lightness. Pastels are gentle on the eyes and work well for dashboards, onboarding screens, category tags, and any interface where multiple distinct colors are needed without visual aggression.
Shades & Tints of #1D2C81
Lightness variations at hue 231 and 63% saturation.
CSS Gradients with #1D2C81
Design Use Cases for #1D2C81
Vibrant Brand Color
#1D2C81 has a strong 63% saturation that makes it ideal for brand identity elements. Use it for logos, primary call-to-action buttons, hero section accents, and marketing materials where visual impact matters. This saturation level is eye-catching without being harsh.
Primary Interface Color
At 31% lightness, #1D2C81 is in the mid-range, making it ideal for interactive elements like buttons, links, and selected states. This lightness level ensures good contrast against both light and dark adjacent elements in most layouts.
Trust & Professional Identity
#1D2C81 sits in the blue range (hue 231). Blue is the world's most popular color for corporate identities because it conveys trust, stability, and competence. Use it for navigation bars, link text, form focus states, and any element where user confidence matters. Financial, healthcare, and technology brands rely heavily on this hue range.
Gradient Pairing
Create a gradient from #1D2C81 (hue 231) to its complement at hue 51. For a subtler effect, try pairing with an analogous color at hue 261. Use CSS: background: linear-gradient(135deg, #1d2c81, #81721d);
CSS Code for #1D2C81
Similar Colors
Colors visually similar to #1D2C81 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #1D2C81 across image editing and color design tools.
About Color #1D2C81 (#1D2C81)
#1D2C81 is a blue color (colour) with RGB channel values of 29 red, 44 green, and 129 blue. The blue channel is dominant by a ratio of 4.4:1 over the weakest channel. In HSL terms, the hue sits at 231 degrees with 63% saturation and 31% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #1D2C81 is 49/255 using the ITU-R BT.601 luma formula (0.299R + 0.587G + 0.114B). This appears dark to the human eye, so pair it with light text for adequate readability. For print production, the CMYK equivalent is 78% cyan, 66% magenta, 0% yellow, and 49% key (black).
The WCAG contrast ratio of #1D2C81 against white is 12.14:1 and against black is 1.73:1. This exceeds the AAA requirement (7:1) for normal text on white, making it excellent for body text and small UI labels on light backgrounds.
The complementary colour #81721D creates maximum visual tension when paired with #1D2C81. For more harmonious color combinations, use the analogous colours #1D5E81 and #401D81, which sit 30 degrees on either side of the hue wheel. To build a complete design system, start with the monochromatic scale above for consistent shade variations, then add one complementary or triadic accent for interactive elements.
How to Explore Color #1D2C81
- Enter your color value in HEX format.
- The tool converts it to RGB, HSL, CMYK format in real time.
- Copy the converted value to your clipboard.
What is HEX to RGB, HSL, CMYK color conversion
Converting from HEX to RGB, HSL, CMYK translates a color value between two different color models. Different color models are used in web design (HEX, RGB), print (CMYK), and color theory (HSL, HSV).
Related Tools & Colors
Frequently Asked Questions
- What color / colour is #1D2C81?
- #1D2C81 is Color #1D2C81, a blue color (colour) with RGB(29, 44, 129), HSL(231, 63%, 31%), and CMYK(78%, 66%, 0%, 49%). Its perceived brightness is 49/255.
- Is #1D2C81 accessible for text?
- Against white, #1D2C81 has a contrast ratio of 12.14:1 (passes AA for normal text). Against black, it has 1.73:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #1D2C81?
- The complementary colour is #81721D (hue 51). For subtle color combinations, use analogous colours #1D5E81 and #401D81. The triadic palette adds #811D2C and #2C811D for vibrant variety.
- How do I use #1D2C81 in CSS?
- Use any format: color: #1d2c81; or rgb(29, 44, 129); or hsl(231, 63%, 31%). For CSS custom properties: --color-primary: 231 63% 31%; then use it as hsl(var(--color-primary)).
- Is this color / colour explorer free?
- Yes, completely free with no signup required. All colour calculations run in your browser. You can explore any valid hex color code, not just the pre-generated palette.