Color #13172B Color / Colour Code #13172B
This page shows the hex color code for color #13172b (#13172B). The colour is a blue tone with 39% saturation and 12% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #13172B against common backgrounds.
Complementary Colors
#13172B paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 200, 230, and 260 degrees for harmonious combinations.
Triadic Palette
Three colors at 230, 350, and 110 degrees.
Color Palettes Using #13172B
Five shades at lightness levels 15% through 85% while keeping hue at 230 and saturation at 39%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 230 to 275 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 230 with its complement at 50 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 #13172B
Lightness variations at hue 230 and 39% saturation.
CSS Gradients with #13172B
Design Use Cases for #13172B
Balanced UI Color
At 39% saturation, #13172B 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 12% lightness, #13172B 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
#13172B sits in the blue range (hue 230). 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 #13172B (hue 230) to its complement at hue 50. For a subtler effect, try pairing with an analogous color at hue 260. Use CSS: background: linear-gradient(135deg, #13172b, #2b2713);
CSS Code for #13172B
Similar Colors
Colors visually similar to #13172B based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #13172B across image editing and color design tools.
About Color #13172B (#13172B)
#13172B is a blue color (colour) with RGB channel values of 19 red, 23 green, and 43 blue. The blue channel is dominant by a ratio of 2.3:1 over the weakest channel. In HSL terms, the hue sits at 230 degrees with 39% saturation and 12% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #13172B is 24/255 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 56% cyan, 47% magenta, 0% yellow, and 83% key (black).
The WCAG contrast ratio of #13172B against white is 17.72:1 and against black is 1.19:1. 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 #2B2713 creates maximum visual tension when paired with #13172B. For more harmonious color combinations, use the analogous colours #13232B and #1B132B, 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 #13172B
- 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 #13172B?
- #13172B is Color #13172B, a blue color (colour) with RGB(19, 23, 43), HSL(230, 39%, 12%), and CMYK(56%, 47%, 0%, 83%). Its perceived brightness is 24/255.
- Is #13172B accessible for text?
- Against white, #13172B has a contrast ratio of 17.72:1 (passes AA for normal text). Against black, it has 1.19:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #13172B?
- The complementary colour is #2B2713 (hue 50). For subtle color combinations, use analogous colours #13232B and #1B132B. The triadic palette adds #2B1317 and #172B13 for vibrant variety.
- How do I use #13172B in CSS?
- Use any format: color: #13172b; or rgb(19, 23, 43); or hsl(230, 39%, 12%). For CSS custom properties: --color-primary: 230 39% 12%; 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.