Color #283F4A Color / Colour Code #283F4A
This page shows the hex color code for color #283f4a (#283F4A). The colour is a blue tone with 30% saturation and 22% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #283F4A against common backgrounds.
Complementary Colors
#283F4A paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 169, 199, and 229 degrees for harmonious combinations.
Triadic Palette
Three colors at 199, 319, and 79 degrees.
Color Palettes Using #283F4A
Five shades at lightness levels 15% through 85% while keeping hue at 199 and saturation at 30%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 199 to 244 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 199 with its complement at 19 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 #283F4A
Lightness variations at hue 199 and 30% saturation.
CSS Gradients with #283F4A
Design Use Cases for #283F4A
Balanced UI Color
At 30% saturation, #283F4A 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
#283F4A at 22% lightness is dark enough for readable body text on light backgrounds while retaining its blue character. Use for headings, emphasized text, or deep accent borders. It provides contrast without the harshness of pure black.
Trust & Professional Identity
#283F4A sits in the blue range (hue 199). Blue is the world's most popular color for corporate identities because it conveys trust, stability, and competence. Use it for navigation bars, link text, form focus states, and any element where user confidence matters. Financial, healthcare, and technology brands rely heavily on this hue range.
Gradient Pairing
Create a gradient from #283F4A (hue 199) to its complement at hue 19. For a subtler effect, try pairing with an analogous color at hue 229. Use CSS: background: linear-gradient(135deg, #283f4a, #493227);
CSS Code for #283F4A
Similar Colors
Colors visually similar to #283F4A based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #283F4A across image editing and color design tools.
About Color #283F4A (#283F4A)
#283F4A is a blue color (colour) with RGB channel values of 40 red, 63 green, and 74 blue. The blue channel is dominant with a relatively balanced channel distribution. In HSL terms, the hue sits at 199 degrees with 30% saturation and 22% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #283F4A is 57/255 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 46% cyan, 15% magenta, 0% yellow, and 71% key (black).
The WCAG contrast ratio of #283F4A against white is 11.05:1 and against black is 1.90:1. 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 #493227 creates maximum visual tension when paired with #283F4A. For more harmonious color combinations, use the analogous colours #274943 and #272D49, 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 #283F4A
- 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 #283F4A?
- #283F4A is Color #283F4A, a blue color (colour) with RGB(40, 63, 74), HSL(199, 30%, 22%), and CMYK(46%, 15%, 0%, 71%). Its perceived brightness is 57/255.
- Is #283F4A accessible for text?
- Against white, #283F4A has a contrast ratio of 11.05:1 (passes AA for normal text). Against black, it has 1.90:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #283F4A?
- The complementary colour is #493227 (hue 19). For subtle color combinations, use analogous colours #274943 and #272D49. The triadic palette adds #49273E and #3E4927 for vibrant variety.
- How do I use #283F4A in CSS?
- Use any format: color: #283f4a; or rgb(40, 63, 74); or hsl(199, 30%, 22%). For CSS custom properties: --color-primary: 199 30% 22%; 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.