Color #309FCA Color / Colour Code #309FCA
This page shows the hex color code for color #309fca (#309FCA). The colour is a blue tone with 62% saturation and 49% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #309FCA against common backgrounds.
Complementary Colors
#309FCA paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 167, 197, and 227 degrees for harmonious combinations.
Triadic Palette
Three colors at 197, 317, and 77 degrees.
Color Palettes Using #309FCA
Five shades at lightness levels 15% through 85% while keeping hue at 197 and saturation at 62%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 197 to 242 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 197 with its complement at 17 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 #309FCA
Lightness variations at hue 197 and 62% saturation.
CSS Gradients with #309FCA
Design Use Cases for #309FCA
Vibrant Brand Color
#309FCA has a strong 62% saturation that makes it ideal for brand identity elements. Use it for logos, primary call-to-action buttons, hero section accents, and marketing materials where visual impact matters. This saturation level is eye-catching without being harsh.
Primary Interface Color
At 49% lightness, #309FCA 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.
Trust & Professional Identity
#309FCA sits in the blue range (hue 197). 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 #309FCA (hue 197) to its complement at hue 17. For a subtler effect, try pairing with an analogous color at hue 227. Use CSS: background: linear-gradient(135deg, #309fca, #ca5b2f);
CSS Code for #309FCA
Similar Colors
Colors visually similar to #309FCA based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #309FCA across image editing and color design tools.
About Color #309FCA (#309FCA)
#309FCA is a blue color (colour) with RGB channel values of 48 red, 159 green, and 202 blue. The blue channel is dominant by a ratio of 4.2:1 over the weakest channel. In HSL terms, the hue sits at 197 degrees with 62% saturation and 49% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #309FCA is 131/255 using the ITU-R BT.601 luma formula (0.299R + 0.587G + 0.114B). This is a medium-brightness color that can work with either dark or light text depending on font weight and size. For print production, the CMYK equivalent is 76% cyan, 21% magenta, 0% yellow, and 21% key (black).
The WCAG contrast ratio of #309FCA against white is 3.03:1 and against black is 6.94:1. This only passes AA for large text (18pt+) on white. For normal body text on white, darken the color or use it on a dark background where it achieves 6.94:1.
The complementary colour #CA5B2F creates maximum visual tension when paired with #309FCA. For more harmonious color combinations, use the analogous colours #2FCAA9 and #2F51CA, 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 #309FCA
- 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 #309FCA?
- #309FCA is Color #309FCA, a blue color (colour) with RGB(48, 159, 202), HSL(197, 62%, 49%), and CMYK(76%, 21%, 0%, 21%). Its perceived brightness is 131/255.
- Is #309FCA accessible for text?
- Against white, #309FCA has a contrast ratio of 3.03:1 (fails AA for normal text). Against black, it has 6.94:1 (passes AA). It passes AA for large text (18pt+) on white. Use the contrast checker tool for custom background pairings.
- What colours pair well with #309FCA?
- The complementary colour is #CA5B2F (hue 17). For subtle color combinations, use analogous colours #2FCAA9 and #2F51CA. The triadic palette adds #CA2F9F and #9FCA2F for vibrant variety.
- How do I use #309FCA in CSS?
- Use any format: color: #309fca; or rgb(48, 159, 202); or hsl(197, 62%, 49%). For CSS custom properties: --color-primary: 197 62% 49%; 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.