Color #91AC39 Color / Colour Code #91AC39
This page shows the hex color code for color #91ac39 (#91AC39). The colour is a yellow tone with 50% saturation and 45% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #91AC39 against common backgrounds.
Complementary Colors
#91AC39 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 44, 74, and 104 degrees for harmonious combinations.
Triadic Palette
Three colors at 74, 194, and 314 degrees.
Color Palettes Using #91AC39
Five shades at lightness levels 15% through 85% while keeping hue at 74 and saturation at 50%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 74 to 119 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 74 with its complement at 254 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 #91AC39
Lightness variations at hue 74 and 50% saturation.
CSS Gradients with #91AC39
Design Use Cases for #91AC39
Balanced UI Color
At 50% saturation, #91AC39 strikes a balance between vibrancy and restraint. This makes it versatile for primary UI elements like navigation bars, card headers, and form accents. It draws attention without overwhelming adjacent content.
Primary Interface Color
At 45% lightness, #91AC39 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
#91AC39 is in the yellow spectrum (hue 74). 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 #91AC39 (hue 74) to its complement at hue 254. For a subtler effect, try pairing with an analogous color at hue 104. Use CSS: background: linear-gradient(135deg, #91ac39, #5439ac);
CSS Code for #91AC39
Similar Colors
Colors visually similar to #91AC39 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #91AC39 across image editing and color design tools.
About Color #91AC39 (#91AC39)
#91AC39 is a yellow color (colour) with RGB channel values of 145 red, 172 green, and 57 blue. The green channel is dominant by a ratio of 3.0:1 over the weakest channel. In HSL terms, the hue sits at 74 degrees with 50% saturation and 45% lightness, placing it in the neutral-to-cool range of the colour spectrum.
The perceived brightness of #91AC39 is 151/255 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 16% cyan, 0% magenta, 67% yellow, and 33% key (black).
The WCAG contrast ratio of #91AC39 against white is 2.57:1 and against black is 8.16:1. This does not meet AA requirements on white. Use it on dark backgrounds where it achieves 8.16:1, or use it exclusively for decorative purposes.
The complementary colour #5439AC creates maximum visual tension when paired with #91AC39. For more harmonious color combinations, use the analogous colours #AC8E39 and #58AC39, 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 #91AC39
- 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 #91AC39?
- #91AC39 is Color #91AC39, a yellow color (colour) with RGB(145, 172, 57), HSL(74, 50%, 45%), and CMYK(16%, 0%, 67%, 33%). Its perceived brightness is 151/255.
- Is #91AC39 accessible for text?
- Against white, #91AC39 has a contrast ratio of 2.57:1 (fails AA for normal text). Against black, it has 8.16:1 (passes AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #91AC39?
- The complementary colour is #5439AC (hue 254). For subtle color combinations, use analogous colours #AC8E39 and #58AC39. The triadic palette adds #3991AC and #AC3991 for vibrant variety.
- How do I use #91AC39 in CSS?
- Use any format: color: #91ac39; or rgb(145, 172, 57); or hsl(74, 50%, 45%). For CSS custom properties: --color-primary: 74 50% 45%; 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.