Color #E52F0B Color / Colour Code #E52F0B
This page shows the hex color code for color #e52f0b (#E52F0B). The colour is a red tone with 91% saturation and 47% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #E52F0B against common backgrounds.
Complementary Colors
#E52F0B paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 340, 10, and 40 degrees for harmonious combinations.
Triadic Palette
Three colors at 10, 130, and 250 degrees.
Color Palettes Using #E52F0B
Five shades at lightness levels 15% through 85% while keeping hue at 10 and saturation at 91%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 10 to 55 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 10 with its complement at 190 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 #E52F0B
Lightness variations at hue 10 and 91% saturation.
CSS Gradients with #E52F0B
Design Use Cases for #E52F0B
High-Impact Accent
With 91% saturation, #E52F0B 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.
Primary Interface Color
At 47% lightness, #E52F0B 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
#E52F0B falls in the red spectrum (hue 10). 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 #E52F0B (hue 10) to its complement at hue 190. For a subtler effect, try pairing with an analogous color at hue 40. Use CSS: background: linear-gradient(135deg, #e52f0b, #0bc1e5);
CSS Code for #E52F0B
Similar Colors
Colors visually similar to #E52F0B based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #E52F0B across image editing and color design tools.
About Color #E52F0B (#E52F0B)
#E52F0B is a red color (colour) with RGB channel values of 229 red, 47 green, and 11 blue. The red channel is dominant by a ratio of 20.8:1 over the weakest channel. In HSL terms, the hue sits at 10 degrees with 91% saturation and 47% lightness, placing it in the warm range of the colour spectrum.
The perceived brightness of #E52F0B is 97/255 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, 79% magenta, 95% yellow, and 10% key (black).
The WCAG contrast ratio of #E52F0B against white is 4.43:1 and against black is 4.74:1. This only passes AA for large text (18pt+) on white. For normal body text on white, darken the color or use it on a dark background where it achieves 4.74:1.
The complementary colour #0BC1E5 creates maximum visual tension when paired with #E52F0B. For more harmonious color combinations, use the analogous colours #E50B53 and #E59C0B, 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 #E52F0B
- 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 #E52F0B?
- #E52F0B is Color #E52F0B, a red color (colour) with RGB(229, 47, 11), HSL(10, 91%, 47%), and CMYK(0%, 79%, 95%, 10%). Its perceived brightness is 97/255.
- Is #E52F0B accessible for text?
- Against white, #E52F0B has a contrast ratio of 4.43:1 (fails AA for normal text). Against black, it has 4.74:1 (passes AA). It passes AA for large text (18pt+) on white. Use the contrast checker tool for custom background pairings.
- What colours pair well with #E52F0B?
- The complementary colour is #0BC1E5 (hue 190). For subtle color combinations, use analogous colours #E50B53 and #E59C0B. The triadic palette adds #0BE52F and #2F0BE5 for vibrant variety.
- How do I use #E52F0B in CSS?
- Use any format: color: #e52f0b; or rgb(229, 47, 11); or hsl(10, 91%, 47%). For CSS custom properties: --color-primary: 10 91% 47%; 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.