Color #0100FF Color / Colour Code #0100FF
This page shows the hex color code for color #0100ff (#0100FF). The colour is a blue tone with 100% saturation and 50% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #0100FF against common backgrounds.
Complementary Colors
#0100FF paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 210, 240, and 270 degrees for harmonious combinations.
Triadic Palette
Three colors at 240, 0, and 120 degrees.
Color Palettes Using #0100FF
Five shades at lightness levels 15% through 85% while keeping hue at 240 and saturation at 100%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 240 to 285 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 240 with its complement at 60 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 #0100FF
Lightness variations at hue 240 and 100% saturation.
CSS Gradients with #0100FF
Design Use Cases for #0100FF
High-Impact Accent
With 100% saturation, #0100FF is highly vivid. Reserve this for elements that need maximum attention: primary action buttons, notification badges, error states, or promotional banners. Use sparingly alongside neutral tones to avoid visual fatigue.
Soft Accent & Highlight
With 50% lightness, #0100FF has a softer, more approachable quality. It works well for hover states, subtle highlights, progress indicators, and secondary UI elements. This lightness range is particularly effective for tag backgrounds and status indicators.
Trust & Professional Identity
#0100FF sits in the blue range (hue 240). 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 #0100FF (hue 240) to its complement at hue 60. For a subtler effect, try pairing with an analogous color at hue 270. Use CSS: background: linear-gradient(135deg, #0100ff, #ffff00);
CSS Code for #0100FF
Similar Colors
Colors visually similar to #0100FF based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #0100FF across image editing and color design tools.
About Color #0100FF (#0100FF)
#0100FF is a blue color (colour) with RGB channel values of 1 red, 0 green, and 255 blue. The blue channel is dominant by a ratio of 255.0:1 over the weakest channel. In HSL terms, the hue sits at 240 degrees with 100% saturation and 50% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #0100FF is 29/255 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 100% cyan, 100% magenta, 0% yellow, and 0% key (black).
The WCAG contrast ratio of #0100FF against white is 8.59:1 and against black is 2.45:1. 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 #FFFF00 creates maximum visual tension when paired with #0100FF. For more harmonious color combinations, use the analogous colours #007FFF and #7F00FF, 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 #0100FF
- 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 #0100FF?
- #0100FF is Color #0100FF, a blue color (colour) with RGB(1, 0, 255), HSL(240, 100%, 50%), and CMYK(100%, 100%, 0%, 0%). Its perceived brightness is 29/255.
- Is #0100FF accessible for text?
- Against white, #0100FF has a contrast ratio of 8.59:1 (passes AA for normal text). Against black, it has 2.45:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #0100FF?
- The complementary colour is #FFFF00 (hue 60). For subtle color combinations, use analogous colours #007FFF and #7F00FF. The triadic palette adds #FF0000 and #00FF00 for vibrant variety.
- How do I use #0100FF in CSS?
- Use any format: color: #0100ff; or rgb(1, 0, 255); or hsl(240, 100%, 50%). For CSS custom properties: --color-primary: 240 100% 50%; 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.