Color #0D38A1 Color / Colour Code #0D38A1
This page shows the hex color code for color #0d38a1 (#0D38A1). The colour is a blue tone with 85% saturation and 34% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #0D38A1 against common backgrounds.
Complementary Colors
#0D38A1 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 193, 223, and 253 degrees for harmonious combinations.
Triadic Palette
Three colors at 223, 343, and 103 degrees.
Color Palettes Using #0D38A1
Five shades at lightness levels 15% through 85% while keeping hue at 223 and saturation at 85%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 223 to 268 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 223 with its complement at 43 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 #0D38A1
Lightness variations at hue 223 and 85% saturation.
CSS Gradients with #0D38A1
Design Use Cases for #0D38A1
High-Impact Accent
With 85% saturation, #0D38A1 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.
Primary Interface Color
At 34% lightness, #0D38A1 is in the mid-range, making it ideal for interactive elements like buttons, links, and selected states. This lightness level ensures good contrast against both light and dark adjacent elements in most layouts.
Trust & Professional Identity
#0D38A1 sits in the blue range (hue 223). 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 #0D38A1 (hue 223) to its complement at hue 43. For a subtler effect, try pairing with an analogous color at hue 253. Use CSS: background: linear-gradient(135deg, #0d38a1, #a0770d);
CSS Code for #0D38A1
Similar Colors
Colors visually similar to #0D38A1 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #0D38A1 across image editing and color design tools.
About Color #0D38A1 (#0D38A1)
#0D38A1 is a blue color (colour) with RGB channel values of 13 red, 56 green, and 161 blue. The blue channel is dominant by a ratio of 12.4:1 over the weakest channel. In HSL terms, the hue sits at 223 degrees with 85% saturation and 34% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #0D38A1 is 55/255 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 92% cyan, 65% magenta, 0% yellow, and 37% key (black).
The WCAG contrast ratio of #0D38A1 against white is 10.01:1 and against black is 2.10:1. 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 #A0770D creates maximum visual tension when paired with #0D38A1. For more harmonious color combinations, use the analogous colours #0D80A0 and #2D0DA0, 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 #0D38A1
- 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 #0D38A1?
- #0D38A1 is Color #0D38A1, a blue color (colour) with RGB(13, 56, 161), HSL(223, 85%, 34%), and CMYK(92%, 65%, 0%, 37%). Its perceived brightness is 55/255.
- Is #0D38A1 accessible for text?
- Against white, #0D38A1 has a contrast ratio of 10.01:1 (passes AA for normal text). Against black, it has 2.10:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #0D38A1?
- The complementary colour is #A0770D (hue 43). For subtle color combinations, use analogous colours #0D80A0 and #2D0DA0. The triadic palette adds #A00D37 and #37A00D for vibrant variety.
- How do I use #0D38A1 in CSS?
- Use any format: color: #0d38a1; or rgb(13, 56, 161); or hsl(223, 85%, 34%). For CSS custom properties: --color-primary: 223 85% 34%; 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.