Color #045BBE Color / Colour Code #045BBE
This page shows the hex color code for color #045bbe (#045BBE). The colour is a blue tone with 96% saturation and 38% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #045BBE against common backgrounds.
Complementary Colors
#045BBE paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 182, 212, and 242 degrees for harmonious combinations.
Triadic Palette
Three colors at 212, 332, and 92 degrees.
Color Palettes Using #045BBE
Five shades at lightness levels 15% through 85% while keeping hue at 212 and saturation at 96%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 212 to 257 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 212 with its complement at 32 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 #045BBE
Lightness variations at hue 212 and 96% saturation.
CSS Gradients with #045BBE
Design Use Cases for #045BBE
High-Impact Accent
With 96% saturation, #045BBE is highly vivid. Reserve this for elements that need maximum attention: primary action buttons, notification badges, error states, or promotional banners. Use sparingly alongside neutral tones to avoid visual fatigue.
Primary Interface Color
At 38% lightness, #045BBE 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
#045BBE sits in the blue range (hue 212). 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 #045BBE (hue 212) to its complement at hue 32. For a subtler effect, try pairing with an analogous color at hue 242. Use CSS: background: linear-gradient(135deg, #045bbe, #be6704);
CSS Code for #045BBE
Similar Colors
Colors visually similar to #045BBE based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #045BBE across image editing and color design tools.
About Color #045BBE (#045BBE)
#045BBE is a blue color (colour) with RGB channel values of 4 red, 91 green, and 190 blue. The blue channel is dominant by a ratio of 47.5:1 over the weakest channel. In HSL terms, the hue sits at 212 degrees with 96% saturation and 38% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #045BBE is 76/255 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 98% cyan, 52% magenta, 0% yellow, and 25% key (black).
The WCAG contrast ratio of #045BBE against white is 6.47:1 and against black is 3.25:1. This meets the AA requirement (4.5:1) for normal text on white. For AAA compliance, consider darkening to at least 27% lightness.
The complementary colour #BE6704 creates maximum visual tension when paired with #045BBE. For more harmonious color combinations, use the analogous colours #04B8BE and #0A04BE, 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 #045BBE
- 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 #045BBE?
- #045BBE is Color #045BBE, a blue color (colour) with RGB(4, 91, 190), HSL(212, 96%, 38%), and CMYK(98%, 52%, 0%, 25%). Its perceived brightness is 76/255.
- Is #045BBE accessible for text?
- Against white, #045BBE has a contrast ratio of 6.47:1 (passes AA for normal text). Against black, it has 3.25:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #045BBE?
- The complementary colour is #BE6704 (hue 32). For subtle color combinations, use analogous colours #04B8BE and #0A04BE. The triadic palette adds #BE045B and #5BBE04 for vibrant variety.
- How do I use #045BBE in CSS?
- Use any format: color: #045bbe; or rgb(4, 91, 190); or hsl(212, 96%, 38%). For CSS custom properties: --color-primary: 212 96% 38%; 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.