Color #181E01 Color / Colour Code #181E01
This page shows the hex color code for color #181e01 (#181E01). The colour is a yellow tone with 94% saturation and 6% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #181E01 against common backgrounds.
Complementary Colors
#181E01 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 42, 72, and 102 degrees for harmonious combinations.
Triadic Palette
Three colors at 72, 192, and 312 degrees.
Color Palettes Using #181E01
Five shades at lightness levels 15% through 85% while keeping hue at 72 and saturation at 94%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 72 to 117 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 72 with its complement at 252 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 #181E01
Lightness variations at hue 72 and 94% saturation.
CSS Gradients with #181E01
Design Use Cases for #181E01
High-Impact Accent
With 94% saturation, #181E01 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.
Dark Mode Background
At just 6% lightness, #181E01 works as a dark mode background or overlay color. Dark backgrounds reduce eye strain in low-light environments and make bright accent colors pop. Pair with light text (minimum 4.5:1 contrast ratio) for readability.
Attention & Optimism
#181E01 is in the yellow spectrum (hue 72). 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 #181E01 (hue 72) to its complement at hue 252. For a subtler effect, try pairing with an analogous color at hue 102. Use CSS: background: linear-gradient(135deg, #181e01, #07011e);
CSS Code for #181E01
Similar Colors
Colors visually similar to #181E01 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #181E01 across image editing and color design tools.
About Color #181E01 (#181E01)
#181E01 is a yellow color (colour) with RGB channel values of 24 red, 30 green, and 1 blue. The green channel is dominant by a ratio of 30.0:1 over the weakest channel. In HSL terms, the hue sits at 72 degrees with 94% saturation and 6% lightness, placing it in the neutral-to-cool range of the colour spectrum.
The perceived brightness of #181E01 is 25/255 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 20% cyan, 0% magenta, 97% yellow, and 88% key (black).
The WCAG contrast ratio of #181E01 against white is 17.14:1 and against black is 1.22:1. 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 #07011E creates maximum visual tension when paired with #181E01. For more harmonious color combinations, use the analogous colours #1E1501 and #0A1E01, 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 #181E01
- 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 #181E01?
- #181E01 is Color #181E01, a yellow color (colour) with RGB(24, 30, 1), HSL(72, 94%, 6%), and CMYK(20%, 0%, 97%, 88%). Its perceived brightness is 25/255.
- Is #181E01 accessible for text?
- Against white, #181E01 has a contrast ratio of 17.14:1 (passes AA for normal text). Against black, it has 1.22:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #181E01?
- The complementary colour is #07011E (hue 252). For subtle color combinations, use analogous colours #1E1501 and #0A1E01. The triadic palette adds #01181E and #1E0118 for vibrant variety.
- How do I use #181E01 in CSS?
- Use any format: color: #181e01; or rgb(24, 30, 1); or hsl(72, 94%, 6%). For CSS custom properties: --color-primary: 72 94% 6%; 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.