Color #66333C Color / Colour Code #66333C
This page shows the hex color code for color #66333c (#66333C). The colour is a red tone with 33% saturation and 30% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #66333C against common backgrounds.
Complementary Colors
#66333C paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 319, 349, and 19 degrees for harmonious combinations.
Triadic Palette
Three colors at 349, 109, and 229 degrees.
Color Palettes Using #66333C
Five shades at lightness levels 15% through 85% while keeping hue at 349 and saturation at 33%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 349 to 34 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 349 with its complement at 169 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 #66333C
Lightness variations at hue 349 and 33% saturation.
CSS Gradients with #66333C
Design Use Cases for #66333C
Balanced UI Color
At 33% saturation, #66333C 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 30% lightness, #66333C 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
#66333C falls in the red spectrum (hue 349). 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 #66333C (hue 349) to its complement at hue 169. For a subtler effect, try pairing with an analogous color at hue 19. Use CSS: background: linear-gradient(135deg, #66333c, #33665c);
CSS Code for #66333C
Similar Colors
Colors visually similar to #66333C based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #66333C across image editing and color design tools.
About Color #66333C (#66333C)
#66333C is a red color (colour) with RGB channel values of 102 red, 51 green, and 60 blue. The red channel is dominant with a relatively balanced channel distribution. In HSL terms, the hue sits at 349 degrees with 33% saturation and 30% lightness, placing it in the warm range of the colour spectrum.
The perceived brightness of #66333C is 67/255 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, 50% magenta, 41% yellow, and 60% key (black).
The WCAG contrast ratio of #66333C against white is 9.98:1 and against black is 2.10:1. 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 #33665C creates maximum visual tension when paired with #66333C. For more harmonious color combinations, use the analogous colours #663356 and #664333, 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 #66333C
- 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 #66333C?
- #66333C is Color #66333C, a red color (colour) with RGB(102, 51, 60), HSL(349, 33%, 30%), and CMYK(0%, 50%, 41%, 60%). Its perceived brightness is 67/255.
- Is #66333C accessible for text?
- Against white, #66333C has a contrast ratio of 9.98:1 (passes AA for normal text). Against black, it has 2.10:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #66333C?
- The complementary colour is #33665C (hue 169). For subtle color combinations, use analogous colours #663356 and #664333. The triadic palette adds #3D6633 and #333D66 for vibrant variety.
- How do I use #66333C in CSS?
- Use any format: color: #66333c; or rgb(102, 51, 60); or hsl(349, 33%, 30%). For CSS custom properties: --color-primary: 349 33% 30%; 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.