Color #000321 Color / Colour Code #000321
This page shows the hex color code for color #000321 (#000321). The colour is a blue tone with 100% saturation and 6% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #000321 against common backgrounds.
Complementary Colors
#000321 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 205, 235, and 265 degrees for harmonious combinations.
Triadic Palette
Three colors at 235, 355, and 115 degrees.
Color Palettes Using #000321
Five shades at lightness levels 15% through 85% while keeping hue at 235 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 235 to 280 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 235 with its complement at 55 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 #000321
Lightness variations at hue 235 and 100% saturation.
CSS Gradients with #000321
Design Use Cases for #000321
High-Impact Accent
With 100% saturation, #000321 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.
Dark Mode Background
At just 6% lightness, #000321 works as a dark mode background or overlay color. Dark backgrounds reduce eye strain in low-light environments and make bright accent colors pop. Pair with light text (minimum 4.5:1 contrast ratio) for readability.
Trust & Professional Identity
#000321 sits in the blue range (hue 235). 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 #000321 (hue 235) to its complement at hue 55. For a subtler effect, try pairing with an analogous color at hue 265. Use CSS: background: linear-gradient(135deg, #000321, #1f1c00);
CSS Code for #000321
Similar Colors
Colors visually similar to #000321 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #000321 across image editing and color design tools.
About Color #000321 (#000321)
#000321 is a blue color (colour) with RGB channel values of 0 red, 3 green, and 33 blue. The blue channel is dominant by a ratio of 33.0:1 over the weakest channel. In HSL terms, the hue sits at 235 degrees with 100% saturation and 6% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #000321 is 6/255 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, 91% magenta, 0% yellow, and 87% key (black).
The WCAG contrast ratio of #000321 against white is 20.29:1 and against black is 1.03:1. 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 #1F1C00 creates maximum visual tension when paired with #000321. For more harmonious color combinations, use the analogous colours #00121F and #0D001F, 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 #000321
- 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 #000321?
- #000321 is Color #000321, a blue color (colour) with RGB(0, 3, 33), HSL(235, 100%, 6%), and CMYK(100%, 91%, 0%, 87%). Its perceived brightness is 6/255.
- Is #000321 accessible for text?
- Against white, #000321 has a contrast ratio of 20.29:1 (passes AA for normal text). Against black, it has 1.03:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #000321?
- The complementary colour is #1F1C00 (hue 55). For subtle color combinations, use analogous colours #00121F and #0D001F. The triadic palette adds #1F0003 and #031F00 for vibrant variety.
- How do I use #000321 in CSS?
- Use any format: color: #000321; or rgb(0, 3, 33); or hsl(235, 100%, 6%). For CSS custom properties: --color-primary: 235 100% 6%; 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.