Color #40FB90 Color / Colour Code #40FB90
This page shows the hex color code for color #40fb90 (#40FB90). The colour is a green tone with 96% saturation and 62% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #40FB90 against common backgrounds.
Complementary Colors
#40FB90 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 116, 146, and 176 degrees for harmonious combinations.
Triadic Palette
Three colors at 146, 266, and 26 degrees.
Color Palettes Using #40FB90
Five shades at lightness levels 15% through 85% while keeping hue at 146 and saturation at 96%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 146 to 191 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 146 with its complement at 326 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 #40FB90
Lightness variations at hue 146 and 96% saturation.
CSS Gradients with #40FB90
Design Use Cases for #40FB90
High-Impact Accent
With 96% saturation, #40FB90 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.
Soft Accent & Highlight
With 62% lightness, #40FB90 has a softer, more approachable quality. It works well for hover states, subtle highlights, progress indicators, and secondary UI elements. This lightness range is particularly effective for tag backgrounds and status indicators.
Success & Growth Indicators
#40FB90 falls in the green range (hue 146). Green universally represents success, growth, and safety. Use it for confirmation messages, positive chart data, eco-friendly badges, and health metrics. In financial dashboards, green indicates gains and positive performance.
Gradient Pairing
Create a gradient from #40FB90 (hue 146) to its complement at hue 326. For a subtler effect, try pairing with an analogous color at hue 176. Use CSS: background: linear-gradient(135deg, #40fb90, #fb41ab);
CSS Code for #40FB90
Similar Colors
Colors visually similar to #40FB90 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #40FB90 across image editing and color design tools.
About Color #40FB90 (#40FB90)
#40FB90 is a green color (colour) with RGB channel values of 64 red, 251 green, and 144 blue. The green channel is dominant by a ratio of 3.9:1 over the weakest channel. In HSL terms, the hue sits at 146 degrees with 96% saturation and 62% lightness, placing it in the neutral-to-cool range of the colour spectrum.
The perceived brightness of #40FB90 is 183/255 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 75% cyan, 0% magenta, 43% yellow, and 2% key (black).
The WCAG contrast ratio of #40FB90 against white is 1.36:1 and against black is 15.42:1. This does not meet AA requirements on white. Use it on dark backgrounds where it achieves 15.42:1, or use it exclusively for decorative purposes.
The complementary colour #FB41AB creates maximum visual tension when paired with #40FB90. For more harmonious color combinations, use the analogous colours #4DFB41 and #41FBEF, 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 #40FB90
- 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 #40FB90?
- #40FB90 is Color #40FB90, a green color (colour) with RGB(64, 251, 144), HSL(146, 96%, 62%), and CMYK(75%, 0%, 43%, 2%). Its perceived brightness is 183/255.
- Is #40FB90 accessible for text?
- Against white, #40FB90 has a contrast ratio of 1.36:1 (fails AA for normal text). Against black, it has 15.42:1 (passes AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #40FB90?
- The complementary colour is #FB41AB (hue 326). For subtle color combinations, use analogous colours #4DFB41 and #41FBEF. The triadic palette adds #9241FB and #FB9241 for vibrant variety.
- How do I use #40FB90 in CSS?
- Use any format: color: #40fb90; or rgb(64, 251, 144); or hsl(146, 96%, 62%). For CSS custom properties: --color-primary: 146 96% 62%; 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.