Color #100B22 Color / Colour Code #100B22
This page shows the hex color code for color #100b22 (#100B22). The colour is a blue tone with 51% saturation and 9% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #100B22 against common backgrounds.
Complementary Colors
#100B22 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 223, 253, and 283 degrees for harmonious combinations.
Triadic Palette
Three colors at 253, 13, and 133 degrees.
Color Palettes Using #100B22
Five shades at lightness levels 15% through 85% while keeping hue at 253 and saturation at 51%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 253 to 298 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 253 with its complement at 73 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 #100B22
Lightness variations at hue 253 and 51% saturation.
CSS Gradients with #100B22
Design Use Cases for #100B22
Balanced UI Color
At 51% saturation, #100B22 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.
Dark Mode Background
At just 9% lightness, #100B22 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
#100B22 sits in the blue range (hue 253). 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 #100B22 (hue 253) to its complement at hue 73. For a subtler effect, try pairing with an analogous color at hue 283. Use CSS: background: linear-gradient(135deg, #100b22, #1e230b);
CSS Code for #100B22
Similar Colors
Colors visually similar to #100B22 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #100B22 across image editing and color design tools.
About Color #100B22 (#100B22)
#100B22 is a blue color (colour) with RGB channel values of 16 red, 11 green, and 34 blue. The blue channel is dominant by a ratio of 3.1:1 over the weakest channel. In HSL terms, the hue sits at 253 degrees with 51% saturation and 9% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #100B22 is 15/255 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 53% cyan, 68% magenta, 0% yellow, and 87% key (black).
The WCAG contrast ratio of #100B22 against white is 19.21:1 and against black is 1.09:1. 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 #1E230B creates maximum visual tension when paired with #100B22. For more harmonious color combinations, use the analogous colours #0B1223 and #1C0B23, 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 #100B22
- 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 #100B22?
- #100B22 is Color #100B22, a blue color (colour) with RGB(16, 11, 34), HSL(253, 51%, 9%), and CMYK(53%, 68%, 0%, 87%). Its perceived brightness is 15/255.
- Is #100B22 accessible for text?
- Against white, #100B22 has a contrast ratio of 19.21:1 (passes AA for normal text). Against black, it has 1.09:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #100B22?
- The complementary colour is #1E230B (hue 73). For subtle color combinations, use analogous colours #0B1223 and #1C0B23. The triadic palette adds #23100B and #0B2310 for vibrant variety.
- How do I use #100B22 in CSS?
- Use any format: color: #100b22; or rgb(16, 11, 34); or hsl(253, 51%, 9%). For CSS custom properties: --color-primary: 253 51% 9%; 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.