Color #51001D Color / Colour Code #51001D
This page shows the hex color code for color #51001d (#51001D). The colour is a pink tone with 100% saturation and 16% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #51001D against common backgrounds.
Complementary Colors
#51001D paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 309, 339, and 9 degrees for harmonious combinations.
Triadic Palette
Three colors at 339, 99, and 219 degrees.
Color Palettes Using #51001D
Five shades at lightness levels 15% through 85% while keeping hue at 339 and saturation at 100%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 339 to 24 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 339 with its complement at 159 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 #51001D
Lightness variations at hue 339 and 100% saturation.
CSS Gradients with #51001D
Design Use Cases for #51001D
High-Impact Accent
With 100% saturation, #51001D 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.
Deep Accent & Text Color
#51001D at 16% lightness is dark enough for readable body text on light backgrounds while retaining its pink character. Use for headings, emphasized text, or deep accent borders. It provides contrast without the harshness of pure black.
Playfulness & Compassion
#51001D is in the pink range (hue 339). Pink ranges from energetic to gentle depending on saturation and lightness. Use it for beauty and cosmetics branding, social app interfaces, Valentine's themes, and youth-oriented design. Desaturated pinks work well as soft background tints.
Gradient Pairing
Create a gradient from #51001D (hue 339) to its complement at hue 159. For a subtler effect, try pairing with an analogous color at hue 9. Use CSS: background: linear-gradient(135deg, #51001d, #005235);
CSS Code for #51001D
Similar Colors
Colors visually similar to #51001D based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #51001D across image editing and color design tools.
About Color #51001D (#51001D)
#51001D is a pink color (colour) with RGB channel values of 81 red, 0 green, and 29 blue. The red channel is dominant by a ratio of 81.0:1 over the weakest channel. In HSL terms, the hue sits at 339 degrees with 100% saturation and 16% lightness, placing it in the warm range of the colour spectrum.
The perceived brightness of #51001D is 28/255 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, 100% magenta, 64% yellow, and 68% key (black).
The WCAG contrast ratio of #51001D against white is 15.36:1 and against black is 1.37:1. 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 #005235 creates maximum visual tension when paired with #51001D. For more harmonious color combinations, use the analogous colours #520045 and #520C00, 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 #51001D
- 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 #51001D?
- #51001D is Color #51001D, a pink color (colour) with RGB(81, 0, 29), HSL(339, 100%, 16%), and CMYK(0%, 100%, 64%, 68%). Its perceived brightness is 28/255.
- Is #51001D accessible for text?
- Against white, #51001D has a contrast ratio of 15.36:1 (passes AA for normal text). Against black, it has 1.37:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #51001D?
- The complementary colour is #005235 (hue 159). For subtle color combinations, use analogous colours #520045 and #520C00. The triadic palette adds #1D5200 and #001D52 for vibrant variety.
- How do I use #51001D in CSS?
- Use any format: color: #51001d; or rgb(81, 0, 29); or hsl(339, 100%, 16%). For CSS custom properties: --color-primary: 339 100% 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.