Color #100C22 Color / Colour Code #100C22
This page shows the hex color code for color #100c22 (#100C22). The colour is a blue tone with 48% saturation and 9% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #100C22 against common backgrounds.
Complementary Colors
#100C22 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 221, 251, and 281 degrees for harmonious combinations.
Triadic Palette
Three colors at 251, 11, and 131 degrees.
Color Palettes Using #100C22
Five shades at lightness levels 15% through 85% while keeping hue at 251 and saturation at 48%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 251 to 296 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 251 with its complement at 71 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 #100C22
Lightness variations at hue 251 and 48% saturation.
CSS Gradients with #100C22
Design Use Cases for #100C22
Balanced UI Color
At 48% saturation, #100C22 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, #100C22 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
#100C22 sits in the blue range (hue 251). 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 #100C22 (hue 251) to its complement at hue 71. For a subtler effect, try pairing with an analogous color at hue 281. Use CSS: background: linear-gradient(135deg, #100c22, #1e220c);
CSS Code for #100C22
Similar Colors
Colors visually similar to #100C22 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #100C22 across image editing and color design tools.
About Color #100C22 (#100C22)
#100C22 is a blue color (colour) with RGB channel values of 16 red, 12 green, and 34 blue. The blue channel is dominant by a ratio of 2.8:1 over the weakest channel. In HSL terms, the hue sits at 251 degrees with 48% saturation and 9% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #100C22 is 16/255 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, 65% magenta, 0% yellow, and 87% key (black).
The WCAG contrast ratio of #100C22 against white is 19.13:1 and against black is 1.10:1. 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 #1E220C creates maximum visual tension when paired with #100C22. For more harmonious color combinations, use the analogous colours #0C1322 and #1B0C22, 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 #100C22
- 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 #100C22?
- #100C22 is Color #100C22, a blue color (colour) with RGB(16, 12, 34), HSL(251, 48%, 9%), and CMYK(53%, 65%, 0%, 87%). Its perceived brightness is 16/255.
- Is #100C22 accessible for text?
- Against white, #100C22 has a contrast ratio of 19.13:1 (passes AA for normal text). Against black, it has 1.10:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #100C22?
- The complementary colour is #1E220C (hue 71). For subtle color combinations, use analogous colours #0C1322 and #1B0C22. The triadic palette adds #22100C and #0C2210 for vibrant variety.
- How do I use #100C22 in CSS?
- Use any format: color: #100c22; or rgb(16, 12, 34); or hsl(251, 48%, 9%). For CSS custom properties: --color-primary: 251 48% 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.