Color #123749 Color / Colour Code #123749
This page shows the hex color code for color #123749 (#123749). The colour is a blue tone with 60% saturation and 18% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #123749 against common backgrounds.
Complementary Colors
#123749 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 170, 200, and 230 degrees for harmonious combinations.
Triadic Palette
Three colors at 200, 320, and 80 degrees.
Color Palettes Using #123749
Five shades at lightness levels 15% through 85% while keeping hue at 200 and saturation at 60%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 200 to 245 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 200 with its complement at 20 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 #123749
Lightness variations at hue 200 and 60% saturation.
CSS Gradients with #123749
Design Use Cases for #123749
Vibrant Brand Color
#123749 has a strong 60% saturation that makes it ideal for brand identity elements. Use it for logos, primary call-to-action buttons, hero section accents, and marketing materials where visual impact matters. This saturation level is eye-catching without being harsh.
Deep Accent & Text Color
#123749 at 18% lightness is dark enough for readable body text on light backgrounds while retaining its blue character. Use for headings, emphasized text, or deep accent borders. It provides contrast without the harshness of pure black.
Trust & Professional Identity
#123749 sits in the blue range (hue 200). 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 #123749 (hue 200) to its complement at hue 20. For a subtler effect, try pairing with an analogous color at hue 230. Use CSS: background: linear-gradient(135deg, #123749, #492512);
CSS Code for #123749
Similar Colors
Colors visually similar to #123749 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #123749 across image editing and color design tools.
About Color #123749 (#123749)
#123749 is a blue color (colour) with RGB channel values of 18 red, 55 green, and 73 blue. The blue channel is dominant by a ratio of 4.1:1 over the weakest channel. In HSL terms, the hue sits at 200 degrees with 60% saturation and 18% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #123749 is 46/255 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 75% cyan, 25% magenta, 0% yellow, and 71% key (black).
The WCAG contrast ratio of #123749 against white is 12.59:1 and against black is 1.67:1. 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 #492512 creates maximum visual tension when paired with #123749. For more harmonious color combinations, use the analogous colours #124940 and #121C49, 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 #123749
- 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 #123749?
- #123749 is Color #123749, a blue color (colour) with RGB(18, 55, 73), HSL(200, 60%, 18%), and CMYK(75%, 25%, 0%, 71%). Its perceived brightness is 46/255.
- Is #123749 accessible for text?
- Against white, #123749 has a contrast ratio of 12.59:1 (passes AA for normal text). Against black, it has 1.67:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #123749?
- The complementary colour is #492512 (hue 20). For subtle color combinations, use analogous colours #124940 and #121C49. The triadic palette adds #491237 and #374912 for vibrant variety.
- How do I use #123749 in CSS?
- Use any format: color: #123749; or rgb(18, 55, 73); or hsl(200, 60%, 18%). For CSS custom properties: --color-primary: 200 60% 18%; 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.