Color #1B436F Color / Colour Code #1B436F
This page shows the hex color code for color #1b436f (#1B436F). The colour is a blue tone with 61% saturation and 27% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #1B436F against common backgrounds.
Complementary Colors
#1B436F paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 181, 211, and 241 degrees for harmonious combinations.
Triadic Palette
Three colors at 211, 331, and 91 degrees.
Color Palettes Using #1B436F
Five shades at lightness levels 15% through 85% while keeping hue at 211 and saturation at 61%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 211 to 256 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 211 with its complement at 31 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 #1B436F
Lightness variations at hue 211 and 61% saturation.
CSS Gradients with #1B436F
Design Use Cases for #1B436F
Vibrant Brand Color
#1B436F has a strong 61% 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.
Deep Accent & Text Color
#1B436F at 27% lightness is dark enough for readable body text on light backgrounds while retaining its blue character. Use for headings, emphasized text, or deep accent borders. It provides contrast without the harshness of pure black.
Trust & Professional Identity
#1B436F sits in the blue range (hue 211). 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 #1B436F (hue 211) to its complement at hue 31. For a subtler effect, try pairing with an analogous color at hue 241. Use CSS: background: linear-gradient(135deg, #1b436f, #6f461b);
CSS Code for #1B436F
Similar Colors
Colors visually similar to #1B436F based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #1B436F across image editing and color design tools.
About Color #1B436F (#1B436F)
#1B436F is a blue color (colour) with RGB channel values of 27 red, 67 green, and 111 blue. The blue channel is dominant by a ratio of 4.1:1 over the weakest channel. In HSL terms, the hue sits at 211 degrees with 61% saturation and 27% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #1B436F is 60/255 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 76% cyan, 40% magenta, 0% yellow, and 56% key (black).
The WCAG contrast ratio of #1B436F against white is 10.10:1 and against black is 2.08:1. 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 #6F461B creates maximum visual tension when paired with #1B436F. For more harmonious color combinations, use the analogous colours #1B6D6F and #1C1B6F, 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 #1B436F
- 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 #1B436F?
- #1B436F is Color #1B436F, a blue color (colour) with RGB(27, 67, 111), HSL(211, 61%, 27%), and CMYK(76%, 40%, 0%, 56%). Its perceived brightness is 60/255.
- Is #1B436F accessible for text?
- Against white, #1B436F has a contrast ratio of 10.10:1 (passes AA for normal text). Against black, it has 2.08:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #1B436F?
- The complementary colour is #6F461B (hue 31). For subtle color combinations, use analogous colours #1B6D6F and #1C1B6F. The triadic palette adds #6F1B43 and #436F1B for vibrant variety.
- How do I use #1B436F in CSS?
- Use any format: color: #1b436f; or rgb(27, 67, 111); or hsl(211, 61%, 27%). For CSS custom properties: --color-primary: 211 61% 27%; 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.