Color #EF751B Color / Colour Code #EF751B
This page shows the hex color code for color #ef751b (#EF751B). The colour is a orange tone with 87% saturation and 52% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #EF751B against common backgrounds.
Complementary Colors
#EF751B paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 355, 25, and 55 degrees for harmonious combinations.
Triadic Palette
Three colors at 25, 145, and 265 degrees.
Color Palettes Using #EF751B
Five shades at lightness levels 15% through 85% while keeping hue at 25 and saturation at 87%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 25 to 70 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 25 with its complement at 205 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 #EF751B
Lightness variations at hue 25 and 87% saturation.
CSS Gradients with #EF751B
Design Use Cases for #EF751B
High-Impact Accent
With 87% saturation, #EF751B 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.
Soft Accent & Highlight
With 52% lightness, #EF751B has a softer, more approachable quality. It works well for hover states, subtle highlights, progress indicators, and secondary UI elements. This lightness range is particularly effective for tag backgrounds and status indicators.
Warmth & Enthusiasm
#EF751B sits in the orange range (hue 25). Orange combines the energy of red with the warmth of yellow. It works naturally for progress indicators, pricing highlights, "new" badges, and friendly call-to-action buttons. Food and fitness brands frequently use this hue range.
Gradient Pairing
Create a gradient from #EF751B (hue 25) to its complement at hue 205. For a subtler effect, try pairing with an analogous color at hue 55. Use CSS: background: linear-gradient(135deg, #ef751b, #1a96ef);
CSS Code for #EF751B
Similar Colors
Colors visually similar to #EF751B based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #EF751B across image editing and color design tools.
About Color #EF751B (#EF751B)
#EF751B is a orange color (colour) with RGB channel values of 239 red, 117 green, and 27 blue. The red channel is dominant by a ratio of 8.9:1 over the weakest channel. In HSL terms, the hue sits at 25 degrees with 87% saturation and 52% lightness, placing it in the warm range of the colour spectrum.
The perceived brightness of #EF751B is 143/255 using the ITU-R BT.601 luma formula (0.299R + 0.587G + 0.114B). This is a medium-brightness color that can work with either dark or light text depending on font weight and size. For print production, the CMYK equivalent is 0% cyan, 51% magenta, 89% yellow, and 6% key (black).
The WCAG contrast ratio of #EF751B against white is 2.90:1 and against black is 7.23:1. This does not meet AA requirements on white. Use it on dark backgrounds where it achieves 7.23:1, or use it exclusively for decorative purposes.
The complementary colour #1A96EF creates maximum visual tension when paired with #EF751B. For more harmonious color combinations, use the analogous colours #EF1A2C and #EFDD1A, 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 #EF751B
- 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 #EF751B?
- #EF751B is Color #EF751B, a orange color (colour) with RGB(239, 117, 27), HSL(25, 87%, 52%), and CMYK(0%, 51%, 89%, 6%). Its perceived brightness is 143/255.
- Is #EF751B accessible for text?
- Against white, #EF751B has a contrast ratio of 2.90:1 (fails AA for normal text). Against black, it has 7.23:1 (passes AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #EF751B?
- The complementary colour is #1A96EF (hue 205). For subtle color combinations, use analogous colours #EF1A2C and #EFDD1A. The triadic palette adds #1AEF73 and #731AEF for vibrant variety.
- How do I use #EF751B in CSS?
- Use any format: color: #ef751b; or rgb(239, 117, 27); or hsl(25, 87%, 52%). For CSS custom properties: --color-primary: 25 87% 52%; 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.