Color #381A1F Color / Colour Code #381A1F
This page shows the hex color code for color #381a1f (#381A1F). The colour is a red tone with 37% saturation and 16% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #381A1F against common backgrounds.
Complementary Colors
#381A1F paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 320, 350, and 20 degrees for harmonious combinations.
Triadic Palette
Three colors at 350, 110, and 230 degrees.
Color Palettes Using #381A1F
Five shades at lightness levels 15% through 85% while keeping hue at 350 and saturation at 37%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 350 to 35 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 350 with its complement at 170 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 #381A1F
Lightness variations at hue 350 and 37% saturation.
CSS Gradients with #381A1F
Design Use Cases for #381A1F
Balanced UI Color
At 37% saturation, #381A1F 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.
Deep Accent & Text Color
#381A1F at 16% lightness is dark enough for readable body text on light backgrounds while retaining its red character. Use for headings, emphasized text, or deep accent borders. It provides contrast without the harshness of pure black.
Urgency & Energy Signaling
#381A1F falls in the red spectrum (hue 350). 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 #381A1F (hue 350) to its complement at hue 170. For a subtler effect, try pairing with an analogous color at hue 20. Use CSS: background: linear-gradient(135deg, #381a1f, #1a3833);
CSS Code for #381A1F
Similar Colors
Colors visually similar to #381A1F based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #381A1F across image editing and color design tools.
About Color #381A1F (#381A1F)
#381A1F is a red color (colour) with RGB channel values of 56 red, 26 green, and 31 blue. The red channel is dominant by a ratio of 2.2:1 over the weakest channel. In HSL terms, the hue sits at 350 degrees with 37% saturation and 16% lightness, placing it in the warm range of the colour spectrum.
The perceived brightness of #381A1F is 36/255 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, 54% magenta, 45% yellow, and 78% key (black).
The WCAG contrast ratio of #381A1F against white is 15.72:1 and against black is 1.34:1. 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 #1A3833 creates maximum visual tension when paired with #381A1F. For more harmonious color combinations, use the analogous colours #381A2E and #38241A, 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 #381A1F
- 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 #381A1F?
- #381A1F is Color #381A1F, a red color (colour) with RGB(56, 26, 31), HSL(350, 37%, 16%), and CMYK(0%, 54%, 45%, 78%). Its perceived brightness is 36/255.
- Is #381A1F accessible for text?
- Against white, #381A1F has a contrast ratio of 15.72:1 (passes AA for normal text). Against black, it has 1.34:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #381A1F?
- The complementary colour is #1A3833 (hue 170). For subtle color combinations, use analogous colours #381A2E and #38241A. The triadic palette adds #1F381A and #1A1F38 for vibrant variety.
- How do I use #381A1F in CSS?
- Use any format: color: #381a1f; or rgb(56, 26, 31); or hsl(350, 37%, 16%). For CSS custom properties: --color-primary: 350 37% 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.