Color #424B66 Color / Colour Code #424B66
This page shows the hex color code for color #424b66 (#424B66). The colour is a blue tone with 21% saturation and 33% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #424B66 against common backgrounds.
Complementary Colors
#424B66 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 195, 225, and 255 degrees for harmonious combinations.
Triadic Palette
Three colors at 225, 345, and 105 degrees.
Color Palettes Using #424B66
Five shades at lightness levels 15% through 85% while keeping hue at 225 and saturation at 21%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 225 to 270 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 225 with its complement at 45 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 #424B66
Lightness variations at hue 225 and 21% saturation.
CSS Gradients with #424B66
Design Use Cases for #424B66
Muted Accent Color
With 21% saturation, #424B66 has a subtle, sophisticated quality. This level of desaturation works well for secondary buttons, inactive states, subtle borders, and backgrounds that need a hint of color without being distracting. Muted colors communicate restraint and professionalism.
Primary Interface Color
At 33% lightness, #424B66 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
#424B66 sits in the blue range (hue 225). 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 #424B66 (hue 225) to its complement at hue 45. For a subtler effect, try pairing with an analogous color at hue 255. Use CSS: background: linear-gradient(135deg, #424b66, #665d42);
CSS Code for #424B66
Similar Colors
Colors visually similar to #424B66 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #424B66 across image editing and color design tools.
About Color #424B66 (#424B66)
#424B66 is a blue color (colour) with RGB channel values of 66 red, 75 green, and 102 blue. The blue channel is dominant with a relatively balanced channel distribution. In HSL terms, the hue sits at 225 degrees with 21% saturation and 33% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #424B66 is 75/255 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 35% cyan, 26% magenta, 0% yellow, and 60% key (black).
The WCAG contrast ratio of #424B66 against white is 8.64:1 and against black is 2.43:1. 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 #665D42 creates maximum visual tension when paired with #424B66. For more harmonious color combinations, use the analogous colours #425D66 and #4B4266, 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 #424B66
- 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 #424B66?
- #424B66 is Color #424B66, a blue color (colour) with RGB(66, 75, 102), HSL(225, 21%, 33%), and CMYK(35%, 26%, 0%, 60%). Its perceived brightness is 75/255.
- Is #424B66 accessible for text?
- Against white, #424B66 has a contrast ratio of 8.64:1 (passes AA for normal text). Against black, it has 2.43:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #424B66?
- The complementary colour is #665D42 (hue 45). For subtle color combinations, use analogous colours #425D66 and #4B4266. The triadic palette adds #66424B and #4B6642 for vibrant variety.
- How do I use #424B66 in CSS?
- Use any format: color: #424b66; or rgb(66, 75, 102); or hsl(225, 21%, 33%). For CSS custom properties: --color-primary: 225 21% 33%; 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.