Red 900 Color / Colour Code #7F1D1D
This page shows the hex color code for red 900 (#7F1D1D). The colour is a red tone with 63% saturation and 31% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #7F1D1D against common backgrounds.
Complementary Colors
#7F1D1D paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 330, 0, and 30 degrees for harmonious combinations.
Triadic Palette
Three colors at 0, 120, and 240 degrees.
Color Palettes Using #7F1D1D
Five shades at lightness levels 15% through 85% while keeping hue at 0 and saturation at 63%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 0 to 45 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 0 with its complement at 180 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 #7F1D1D
Lightness variations at hue 0 and 63% saturation.
CSS Gradients with #7F1D1D
Design Use Cases for #7F1D1D
Vibrant Brand Color
#7F1D1D has a strong 63% saturation that makes it ideal for brand identity elements. Use it for logos, primary call-to-action buttons, hero section accents, and marketing materials where visual impact matters. This saturation level is eye-catching without being harsh.
Primary Interface Color
At 31% lightness, #7F1D1D 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.
Urgency & Energy Signaling
#7F1D1D falls in the red spectrum (hue 0). Red triggers urgency and excitement, making it effective for sale badges, countdown timers, error messages, and "limited time" labels. In data visualization, use it to flag negative values or critical thresholds.
Gradient Pairing
Create a gradient from #7F1D1D (hue 0) to its complement at hue 180. For a subtler effect, try pairing with an analogous color at hue 30. Use CSS: background: linear-gradient(135deg, #7f1d1d, #1d8181);
CSS Code for #7F1D1D
Similar Colors
Colors visually similar to #7F1D1D based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #7F1D1D across image editing and color design tools.
About Red 900 (#7F1D1D)
#7F1D1D is a red color (colour) with RGB channel values of 127 red, 29 green, and 29 blue. The red channel is dominant by a ratio of 4.4:1 over the weakest channel. In HSL terms, the hue sits at 0 degrees with 63% saturation and 31% lightness, placing it in the warm range of the colour spectrum.
The perceived brightness of #7F1D1D is 58/255 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 0% cyan, 77% magenta, 77% yellow, and 50% key (black).
The WCAG contrast ratio of #7F1D1D against white is 10.02:1 and against black is 2.10:1. 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 #1D8181 creates maximum visual tension when paired with #7F1D1D. For more harmonious color combinations, use the analogous colours #811D4F and #814F1D, 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 #7F1D1D
- 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 #7F1D1D?
- #7F1D1D is Red 900, a red color (colour) with RGB(127, 29, 29), HSL(0, 63%, 31%), and CMYK(0%, 77%, 77%, 50%). Its perceived brightness is 58/255.
- Is #7F1D1D accessible for text?
- Against white, #7F1D1D has a contrast ratio of 10.02:1 (passes AA for normal text). Against black, it has 2.10:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #7F1D1D?
- The complementary colour is #1D8181 (hue 180). For subtle color combinations, use analogous colours #811D4F and #814F1D. The triadic palette adds #1D811D and #1D1D81 for vibrant variety.
- How do I use #7F1D1D in CSS?
- Use any format: color: #7f1d1d; or rgb(127, 29, 29); or hsl(0, 63%, 31%). For CSS custom properties: --color-primary: 0 63% 31%; 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.