Color #175EA1 Color / Colour Code #175EA1
This page shows the hex color code for color #175ea1 (#175EA1). The colour is a blue tone with 75% saturation and 36% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #175EA1 against common backgrounds.
Complementary Colors
#175EA1 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 179, 209, and 239 degrees for harmonious combinations.
Triadic Palette
Three colors at 209, 329, and 89 degrees.
Color Palettes Using #175EA1
Five shades at lightness levels 15% through 85% while keeping hue at 209 and saturation at 75%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 209 to 254 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 209 with its complement at 29 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 #175EA1
Lightness variations at hue 209 and 75% saturation.
CSS Gradients with #175EA1
Design Use Cases for #175EA1
Vibrant Brand Color
#175EA1 has a strong 75% 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 36% lightness, #175EA1 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
#175EA1 sits in the blue range (hue 209). 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 #175EA1 (hue 209) to its complement at hue 29. For a subtler effect, try pairing with an analogous color at hue 239. Use CSS: background: linear-gradient(135deg, #175ea1, #a15a17);
CSS Code for #175EA1
Similar Colors
Colors visually similar to #175EA1 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #175EA1 across image editing and color design tools.
About Color #175EA1 (#175EA1)
#175EA1 is a blue color (colour) with RGB channel values of 23 red, 94 green, and 161 blue. The blue channel is dominant by a ratio of 7.0:1 over the weakest channel. In HSL terms, the hue sits at 209 degrees with 75% saturation and 36% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #175EA1 is 80/255 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 86% cyan, 42% magenta, 0% yellow, and 37% key (black).
The WCAG contrast ratio of #175EA1 against white is 6.66:1 and against black is 3.15:1. This meets the AA requirement (4.5:1) for normal text on white. For AAA compliance, consider darkening to at least 25% lightness.
The complementary colour #A15A17 creates maximum visual tension when paired with #175EA1. For more harmonious color combinations, use the analogous colours #17A19E and #1719A1, 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 #175EA1
- 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 #175EA1?
- #175EA1 is Color #175EA1, a blue color (colour) with RGB(23, 94, 161), HSL(209, 75%, 36%), and CMYK(86%, 42%, 0%, 37%). Its perceived brightness is 80/255.
- Is #175EA1 accessible for text?
- Against white, #175EA1 has a contrast ratio of 6.66:1 (passes AA for normal text). Against black, it has 3.15:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #175EA1?
- The complementary colour is #A15A17 (hue 29). For subtle color combinations, use analogous colours #17A19E and #1719A1. The triadic palette adds #A1175E and #5EA117 for vibrant variety.
- How do I use #175EA1 in CSS?
- Use any format: color: #175ea1; or rgb(23, 94, 161); or hsl(209, 75%, 36%). For CSS custom properties: --color-primary: 209 75% 36%; 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.