Color #A3B300 Color / Colour Code #A3B300
This page shows the hex color code for color #a3b300 (#A3B300). The colour is a yellow tone with 100% saturation and 35% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #A3B300 against common backgrounds.
Complementary Colors
#A3B300 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 35, 65, and 95 degrees for harmonious combinations.
Triadic Palette
Three colors at 65, 185, and 305 degrees.
Color Palettes Using #A3B300
Five shades at lightness levels 15% through 85% while keeping hue at 65 and saturation at 100%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 65 to 110 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 65 with its complement at 245 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 #A3B300
Lightness variations at hue 65 and 100% saturation.
CSS Gradients with #A3B300
Design Use Cases for #A3B300
High-Impact Accent
With 100% saturation, #A3B300 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 35% lightness, #A3B300 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
#A3B300 is in the yellow spectrum (hue 65). 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 #A3B300 (hue 65) to its complement at hue 245. For a subtler effect, try pairing with an analogous color at hue 95. Use CSS: background: linear-gradient(135deg, #a3b300, #0f00b3);
CSS Code for #A3B300
Similar Colors
Colors visually similar to #A3B300 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #A3B300 across image editing and color design tools.
About Color #A3B300 (#A3B300)
#A3B300 is a yellow color (colour) with RGB channel values of 163 red, 179 green, and 0 blue. The green channel is dominant by a ratio of 179.0:1 over the weakest channel. In HSL terms, the hue sits at 65 degrees with 100% saturation and 35% lightness, placing it in the neutral-to-cool range of the colour spectrum.
The perceived brightness of #A3B300 is 154/255 using the ITU-R BT.601 luma formula (0.299R + 0.587G + 0.114B). This is a medium-brightness color that can work with either dark or light text depending on font weight and size. For print production, the CMYK equivalent is 9% cyan, 0% magenta, 100% yellow, and 30% key (black).
The WCAG contrast ratio of #A3B300 against white is 2.33:1 and against black is 9.01:1. This does not meet AA requirements on white. Use it on dark backgrounds where it achieves 9.01:1, or use it exclusively for decorative purposes.
The complementary colour #0F00B3 creates maximum visual tension when paired with #A3B300. For more harmonious color combinations, use the analogous colours #B36800 and #4AB300, 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 #A3B300
- 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 #A3B300?
- #A3B300 is Color #A3B300, a yellow color (colour) with RGB(163, 179, 0), HSL(65, 100%, 35%), and CMYK(9%, 0%, 100%, 30%). Its perceived brightness is 154/255.
- Is #A3B300 accessible for text?
- Against white, #A3B300 has a contrast ratio of 2.33:1 (fails AA for normal text). Against black, it has 9.01:1 (passes AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #A3B300?
- The complementary colour is #0F00B3 (hue 245). For subtle color combinations, use analogous colours #B36800 and #4AB300. The triadic palette adds #00A4B3 and #B300A4 for vibrant variety.
- How do I use #A3B300 in CSS?
- Use any format: color: #a3b300; or rgb(163, 179, 0); or hsl(65, 100%, 35%). For CSS custom properties: --color-primary: 65 100% 35%; 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.