Color #155EBF Color / Colour Code #155EBF
This page shows the hex color code for color #155ebf (#155EBF). The colour is a blue tone with 80% saturation and 42% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #155EBF against common backgrounds.
Complementary Colors
#155EBF paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 184, 214, and 244 degrees for harmonious combinations.
Triadic Palette
Three colors at 214, 334, and 94 degrees.
Color Palettes Using #155EBF
Five shades at lightness levels 15% through 85% while keeping hue at 214 and saturation at 80%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 214 to 259 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 214 with its complement at 34 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 #155EBF
Lightness variations at hue 214 and 80% saturation.
CSS Gradients with #155EBF
Design Use Cases for #155EBF
Vibrant Brand Color
#155EBF has a strong 80% 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 42% lightness, #155EBF 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
#155EBF sits in the blue range (hue 214). 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 #155EBF (hue 214) to its complement at hue 34. For a subtler effect, try pairing with an analogous color at hue 244. Use CSS: background: linear-gradient(135deg, #155ebf, #c17715);
CSS Code for #155EBF
Similar Colors
Colors visually similar to #155EBF based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #155EBF across image editing and color design tools.
About Color #155EBF (#155EBF)
#155EBF is a blue color (colour) with RGB channel values of 21 red, 94 green, and 191 blue. The blue channel is dominant by a ratio of 9.1:1 over the weakest channel. In HSL terms, the hue sits at 214 degrees with 80% saturation and 42% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #155EBF is 83/255 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 89% cyan, 51% magenta, 0% yellow, and 25% key (black).
The WCAG contrast ratio of #155EBF against white is 6.20:1 and against black is 3.39:1. This meets the AA requirement (4.5:1) for normal text on white. For AAA compliance, consider darkening to at least 29% lightness.
The complementary colour #C17715 creates maximum visual tension when paired with #155EBF. For more harmonious color combinations, use the analogous colours #15B5C1 and #2115C1, 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 #155EBF
- 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 #155EBF?
- #155EBF is Color #155EBF, a blue color (colour) with RGB(21, 94, 191), HSL(214, 80%, 42%), and CMYK(89%, 51%, 0%, 25%). Its perceived brightness is 83/255.
- Is #155EBF accessible for text?
- Against white, #155EBF has a contrast ratio of 6.20:1 (passes AA for normal text). Against black, it has 3.39:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #155EBF?
- The complementary colour is #C17715 (hue 34). For subtle color combinations, use analogous colours #15B5C1 and #2115C1. The triadic palette adds #C11560 and #60C115 for vibrant variety.
- How do I use #155EBF in CSS?
- Use any format: color: #155ebf; or rgb(21, 94, 191); or hsl(214, 80%, 42%). For CSS custom properties: --color-primary: 214 80% 42%; 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.