Color #99BC00 Color / Colour Code #99BC00
This page shows the hex color code for color #99bc00 (#99BC00). The colour is a yellow tone with 100% saturation and 37% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #99BC00 against common backgrounds.
Complementary Colors
#99BC00 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 41, 71, and 101 degrees for harmonious combinations.
Triadic Palette
Three colors at 71, 191, and 311 degrees.
Color Palettes Using #99BC00
Five shades at lightness levels 15% through 85% while keeping hue at 71 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 71 to 116 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 71 with its complement at 251 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 #99BC00
Lightness variations at hue 71 and 100% saturation.
CSS Gradients with #99BC00
Design Use Cases for #99BC00
High-Impact Accent
With 100% saturation, #99BC00 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 37% lightness, #99BC00 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
#99BC00 is in the yellow spectrum (hue 71). 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 #99BC00 (hue 71) to its complement at hue 251. For a subtler effect, try pairing with an analogous color at hue 101. Use CSS: background: linear-gradient(135deg, #99bc00, #2300bd);
CSS Code for #99BC00
Similar Colors
Colors visually similar to #99BC00 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #99BC00 across image editing and color design tools.
About Color #99BC00 (#99BC00)
#99BC00 is a yellow color (colour) with RGB channel values of 153 red, 188 green, and 0 blue. The green channel is dominant by a ratio of 188.0:1 over the weakest channel. In HSL terms, the hue sits at 71 degrees with 100% saturation and 37% lightness, placing it in the neutral-to-cool range of the colour spectrum.
The perceived brightness of #99BC00 is 156/255 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 19% cyan, 0% magenta, 100% yellow, and 26% key (black).
The WCAG contrast ratio of #99BC00 against white is 2.20:1 and against black is 9.55:1. This does not meet AA requirements on white. Use it on dark backgrounds where it achieves 9.55:1, or use it exclusively for decorative purposes.
The complementary colour #2300BD creates maximum visual tension when paired with #99BC00. For more harmonious color combinations, use the analogous colours #BD8100 and #3CBD00, 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 #99BC00
- 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 #99BC00?
- #99BC00 is Color #99BC00, a yellow color (colour) with RGB(153, 188, 0), HSL(71, 100%, 37%), and CMYK(19%, 0%, 100%, 26%). Its perceived brightness is 156/255.
- Is #99BC00 accessible for text?
- Against white, #99BC00 has a contrast ratio of 2.20:1 (fails AA for normal text). Against black, it has 9.55:1 (passes AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #99BC00?
- The complementary colour is #2300BD (hue 251). For subtle color combinations, use analogous colours #BD8100 and #3CBD00. The triadic palette adds #009ABD and #BD009A for vibrant variety.
- How do I use #99BC00 in CSS?
- Use any format: color: #99bc00; or rgb(153, 188, 0); or hsl(71, 100%, 37%). For CSS custom properties: --color-primary: 71 100% 37%; 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.