Color #B4E015 Color / Colour Code #B4E015
This page shows the hex color code for color #b4e015 (#B4E015). The colour is a yellow tone with 83% saturation and 48% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #B4E015 against common backgrounds.
Complementary Colors
#B4E015 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 43, 73, and 103 degrees for harmonious combinations.
Triadic Palette
Three colors at 73, 193, and 313 degrees.
Color Palettes Using #B4E015
Five shades at lightness levels 15% through 85% while keeping hue at 73 and saturation at 83%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 73 to 118 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 73 with its complement at 253 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 #B4E015
Lightness variations at hue 73 and 83% saturation.
CSS Gradients with #B4E015
Design Use Cases for #B4E015
Vibrant Brand Color
#B4E015 has a strong 83% 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 48% lightness, #B4E015 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.
Attention & Optimism
#B4E015 is in the yellow spectrum (hue 73). Yellow attracts attention faster than any other color. Use it for warning labels, featured content markers, star ratings, and tooltip backgrounds. Pair with dark text since yellow often fails contrast checks against white.
Gradient Pairing
Create a gradient from #B4E015 (hue 73) to its complement at hue 253. For a subtler effect, try pairing with an analogous color at hue 103. Use CSS: background: linear-gradient(135deg, #b4e015, #4115e0);
CSS Code for #B4E015
Similar Colors
Colors visually similar to #B4E015 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #B4E015 across image editing and color design tools.
About Color #B4E015 (#B4E015)
#B4E015 is a yellow color (colour) with RGB channel values of 180 red, 224 green, and 21 blue. The green channel is dominant by a ratio of 10.7:1 over the weakest channel. In HSL terms, the hue sits at 73 degrees with 83% saturation and 48% lightness, placing it in the neutral-to-cool range of the colour spectrum.
The perceived brightness of #B4E015 is 188/255 using the ITU-R BT.601 luma formula (0.299R + 0.587G + 0.114B). This means it appears bright to the human eye and is best paired with dark text for readability. For print production, the CMYK equivalent is 20% cyan, 0% magenta, 91% yellow, and 12% key (black).
The WCAG contrast ratio of #B4E015 against white is 1.54:1 and against black is 13.61:1. This does not meet AA requirements on white. Use it on dark backgrounds where it achieves 13.61:1, or use it exclusively for decorative purposes.
The complementary colour #4115E0 creates maximum visual tension when paired with #B4E015. For more harmonious color combinations, use the analogous colours #E0A615 and #4EE015, 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 #B4E015
- 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 #B4E015?
- #B4E015 is Color #B4E015, a yellow color (colour) with RGB(180, 224, 21), HSL(73, 83%, 48%), and CMYK(20%, 0%, 91%, 12%). Its perceived brightness is 188/255.
- Is #B4E015 accessible for text?
- Against white, #B4E015 has a contrast ratio of 1.54:1 (fails AA for normal text). Against black, it has 13.61:1 (passes AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #B4E015?
- The complementary colour is #4115E0 (hue 253). For subtle color combinations, use analogous colours #E0A615 and #4EE015. The triadic palette adds #15B4E0 and #E015B4 for vibrant variety.
- How do I use #B4E015 in CSS?
- Use any format: color: #b4e015; or rgb(180, 224, 21); or hsl(73, 83%, 48%). For CSS custom properties: --color-primary: 73 83% 48%; 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.