Color #B43831 Color / Colour Code #B43831
This page shows the hex color code for color #b43831 (#B43831). The colour is a red tone with 57% saturation and 45% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #B43831 against common backgrounds.
Complementary Colors
#B43831 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 333, 3, and 33 degrees for harmonious combinations.
Triadic Palette
Three colors at 3, 123, and 243 degrees.
Color Palettes Using #B43831
Five shades at lightness levels 15% through 85% while keeping hue at 3 and saturation at 57%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 3 to 48 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 3 with its complement at 183 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 #B43831
Lightness variations at hue 3 and 57% saturation.
CSS Gradients with #B43831
Design Use Cases for #B43831
Balanced UI Color
At 57% saturation, #B43831 strikes a balance between vibrancy and restraint. This makes it versatile for primary UI elements like navigation bars, card headers, and form accents. It draws attention without overwhelming adjacent content.
Primary Interface Color
At 45% lightness, #B43831 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
#B43831 falls in the red spectrum (hue 3). 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 #B43831 (hue 3) to its complement at hue 183. For a subtler effect, try pairing with an analogous color at hue 33. Use CSS: background: linear-gradient(135deg, #b43831, #31aeb4);
CSS Code for #B43831
Similar Colors
Colors visually similar to #B43831 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #B43831 across image editing and color design tools.
About Color #B43831 (#B43831)
#B43831 is a red color (colour) with RGB channel values of 180 red, 56 green, and 49 blue. The red channel is dominant by a ratio of 3.7:1 over the weakest channel. In HSL terms, the hue sits at 3 degrees with 57% saturation and 45% lightness, placing it in the warm range of the colour spectrum.
The perceived brightness of #B43831 is 92/255 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, 69% magenta, 73% yellow, and 29% key (black).
The WCAG contrast ratio of #B43831 against white is 5.91:1 and against black is 3.55:1. This meets the AA requirement (4.5:1) for normal text on white. For AAA compliance, consider darkening to at least 31% lightness.
The complementary colour #31AEB4 creates maximum visual tension when paired with #B43831. For more harmonious color combinations, use the analogous colours #B4316C and #B47931, 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 #B43831
- 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 #B43831?
- #B43831 is Color #B43831, a red color (colour) with RGB(180, 56, 49), HSL(3, 57%, 45%), and CMYK(0%, 69%, 73%, 29%). Its perceived brightness is 92/255.
- Is #B43831 accessible for text?
- Against white, #B43831 has a contrast ratio of 5.91:1 (passes AA for normal text). Against black, it has 3.55:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #B43831?
- The complementary colour is #31AEB4 (hue 183). For subtle color combinations, use analogous colours #B4316C and #B47931. The triadic palette adds #31B438 and #3831B4 for vibrant variety.
- How do I use #B43831 in CSS?
- Use any format: color: #b43831; or rgb(180, 56, 49); or hsl(3, 57%, 45%). For CSS custom properties: --color-primary: 3 57% 45%; 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.