Color #18331C Color / Colour Code #18331C
This page shows the hex color code for color #18331c (#18331C). The colour is a green tone with 36% saturation and 15% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #18331C against common backgrounds.
Complementary Colors
#18331C paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 99, 129, and 159 degrees for harmonious combinations.
Triadic Palette
Three colors at 129, 249, and 9 degrees.
Color Palettes Using #18331C
Five shades at lightness levels 15% through 85% while keeping hue at 129 and saturation at 36%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 129 to 174 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 129 with its complement at 309 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 #18331C
Lightness variations at hue 129 and 36% saturation.
CSS Gradients with #18331C
Design Use Cases for #18331C
Balanced UI Color
At 36% saturation, #18331C 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.
Deep Accent & Text Color
#18331C at 15% lightness is dark enough for readable body text on light backgrounds while retaining its green character. Use for headings, emphasized text, or deep accent borders. It provides contrast without the harshness of pure black.
Success & Growth Indicators
#18331C falls in the green range (hue 129). 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 #18331C (hue 129) to its complement at hue 309. For a subtler effect, try pairing with an analogous color at hue 159. Use CSS: background: linear-gradient(135deg, #18331c, #341830);
CSS Code for #18331C
Similar Colors
Colors visually similar to #18331C based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #18331C across image editing and color design tools.
About Color #18331C (#18331C)
#18331C is a green color (colour) with RGB channel values of 24 red, 51 green, and 28 blue. The green channel is dominant by a ratio of 2.1:1 over the weakest channel. In HSL terms, the hue sits at 129 degrees with 36% saturation and 15% lightness, placing it in the neutral-to-cool range of the colour spectrum.
The perceived brightness of #18331C is 40/255 using the ITU-R BT.601 luma formula (0.299R + 0.587G + 0.114B). This appears dark to the human eye, so pair it with light text for adequate readability. For print production, the CMYK equivalent is 53% cyan, 0% magenta, 45% yellow, and 80% key (black).
The WCAG contrast ratio of #18331C against white is 13.73:1 and against black is 1.53:1. This exceeds the AAA requirement (7:1) for normal text on white, making it excellent for body text and small UI labels on light backgrounds.
The complementary colour #341830 creates maximum visual tension when paired with #18331C. For more harmonious color combinations, use the analogous colours #223418 and #18342A, 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 #18331C
- 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 #18331C?
- #18331C is Color #18331C, a green color (colour) with RGB(24, 51, 28), HSL(129, 36%, 15%), and CMYK(53%, 0%, 45%, 80%). Its perceived brightness is 40/255.
- Is #18331C accessible for text?
- Against white, #18331C has a contrast ratio of 13.73:1 (passes AA for normal text). Against black, it has 1.53:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #18331C?
- The complementary colour is #341830 (hue 309). For subtle color combinations, use analogous colours #223418 and #18342A. The triadic palette adds #1D1834 and #341D18 for vibrant variety.
- How do I use #18331C in CSS?
- Use any format: color: #18331c; or rgb(24, 51, 28); or hsl(129, 36%, 15%). For CSS custom properties: --color-primary: 129 36% 15%; 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.