Color #123F1D Color / Colour Code #123F1D
This page shows the hex color code for color #123f1d (#123F1D). The colour is a green tone with 56% saturation and 16% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #123F1D against common backgrounds.
Complementary Colors
#123F1D paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 105, 135, and 165 degrees for harmonious combinations.
Triadic Palette
Three colors at 135, 255, and 15 degrees.
Color Palettes Using #123F1D
Five shades at lightness levels 15% through 85% while keeping hue at 135 and saturation at 56%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 135 to 180 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 135 with its complement at 315 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 #123F1D
Lightness variations at hue 135 and 56% saturation.
CSS Gradients with #123F1D
Design Use Cases for #123F1D
Balanced UI Color
At 56% saturation, #123F1D 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
#123F1D at 16% 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
#123F1D falls in the green range (hue 135). 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 #123F1D (hue 135) to its complement at hue 315. For a subtler effect, try pairing with an analogous color at hue 165. Use CSS: background: linear-gradient(135deg, #123f1d, #401234);
CSS Code for #123F1D
Similar Colors
Colors visually similar to #123F1D based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #123F1D across image editing and color design tools.
About Color #123F1D (#123F1D)
#123F1D is a green color (colour) with RGB channel values of 18 red, 63 green, and 29 blue. The green channel is dominant by a ratio of 3.5:1 over the weakest channel. In HSL terms, the hue sits at 135 degrees with 56% saturation and 16% lightness, placing it in the neutral-to-cool range of the colour spectrum.
The perceived brightness of #123F1D is 46/255 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 71% cyan, 0% magenta, 54% yellow, and 75% key (black).
The WCAG contrast ratio of #123F1D against white is 11.97:1 and against black is 1.75:1. 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 #401234 creates maximum visual tension when paired with #123F1D. For more harmonious color combinations, use the analogous colours #1D4012 and #124034, 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 #123F1D
- 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 #123F1D?
- #123F1D is Color #123F1D, a green color (colour) with RGB(18, 63, 29), HSL(135, 56%, 16%), and CMYK(71%, 0%, 54%, 75%). Its perceived brightness is 46/255.
- Is #123F1D accessible for text?
- Against white, #123F1D has a contrast ratio of 11.97:1 (passes AA for normal text). Against black, it has 1.75:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #123F1D?
- The complementary colour is #401234 (hue 315). For subtle color combinations, use analogous colours #1D4012 and #124034. The triadic palette adds #1D1240 and #401D12 for vibrant variety.
- How do I use #123F1D in CSS?
- Use any format: color: #123f1d; or rgb(18, 63, 29); or hsl(135, 56%, 16%). For CSS custom properties: --color-primary: 135 56% 16%; 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.