Color #213B28 Color / Colour Code #213B28
This page shows the hex color code for color #213b28 (#213B28). The colour is a green tone with 28% saturation and 18% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #213B28 against common backgrounds.
Complementary Colors
#213B28 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 106, 136, and 166 degrees for harmonious combinations.
Triadic Palette
Three colors at 136, 256, and 16 degrees.
Color Palettes Using #213B28
Five shades at lightness levels 15% through 85% while keeping hue at 136 and saturation at 28%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 136 to 181 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 136 with its complement at 316 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 #213B28
Lightness variations at hue 136 and 28% saturation.
CSS Gradients with #213B28
Design Use Cases for #213B28
Muted Accent Color
With 28% saturation, #213B28 has a subtle, sophisticated quality. This level of desaturation works well for secondary buttons, inactive states, subtle borders, and backgrounds that need a hint of color without being distracting. Muted colors communicate restraint and professionalism.
Deep Accent & Text Color
#213B28 at 18% lightness is dark enough for readable body text on light backgrounds while retaining its green character. Use for headings, emphasized text, or deep accent borders. It provides contrast without the harshness of pure black.
Success & Growth Indicators
#213B28 falls in the green range (hue 136). Green universally represents success, growth, and safety. Use it for confirmation messages, positive chart data, eco-friendly badges, and health metrics. In financial dashboards, green indicates gains and positive performance.
Gradient Pairing
Create a gradient from #213B28 (hue 136) to its complement at hue 316. For a subtler effect, try pairing with an analogous color at hue 166. Use CSS: background: linear-gradient(135deg, #213b28, #3b2134);
CSS Code for #213B28
Similar Colors
Colors visually similar to #213B28 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #213B28 across image editing and color design tools.
About Color #213B28 (#213B28)
#213B28 is a green color (colour) with RGB channel values of 33 red, 59 green, and 40 blue. The green channel is dominant with a relatively balanced channel distribution. In HSL terms, the hue sits at 136 degrees with 28% saturation and 18% lightness, placing it in the neutral-to-cool range of the colour spectrum.
The perceived brightness of #213B28 is 49/255 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 44% cyan, 0% magenta, 32% yellow, and 77% key (black).
The WCAG contrast ratio of #213B28 against white is 12.20:1 and against black is 1.72:1. 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 #3B2134 creates maximum visual tension when paired with #213B28. For more harmonious color combinations, use the analogous colours #273B21 and #213B35, 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 #213B28
- 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 #213B28?
- #213B28 is Color #213B28, a green color (colour) with RGB(33, 59, 40), HSL(136, 28%, 18%), and CMYK(44%, 0%, 32%, 77%). Its perceived brightness is 49/255.
- Is #213B28 accessible for text?
- Against white, #213B28 has a contrast ratio of 12.20:1 (passes AA for normal text). Against black, it has 1.72:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #213B28?
- The complementary colour is #3B2134 (hue 316). For subtle color combinations, use analogous colours #273B21 and #213B35. The triadic palette adds #28213B and #3B2821 for vibrant variety.
- How do I use #213B28 in CSS?
- Use any format: color: #213b28; or rgb(33, 59, 40); or hsl(136, 28%, 18%). For CSS custom properties: --color-primary: 136 28% 18%; 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.