Color #331F77 Color / Colour Code #331F77
This page shows the hex color code for color #331f77 (#331F77). The colour is a blue tone with 59% saturation and 29% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #331F77 against common backgrounds.
Complementary Colors
#331F77 paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 224, 254, and 284 degrees for harmonious combinations.
Triadic Palette
Three colors at 254, 14, and 134 degrees.
Color Palettes Using #331F77
Five shades at lightness levels 15% through 85% while keeping hue at 254 and saturation at 59%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 254 to 299 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 254 with its complement at 74 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 #331F77
Lightness variations at hue 254 and 59% saturation.
CSS Gradients with #331F77
Design Use Cases for #331F77
Balanced UI Color
At 59% saturation, #331F77 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.
Deep Accent & Text Color
#331F77 at 29% 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
#331F77 sits in the blue range (hue 254). 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 #331F77 (hue 254) to its complement at hue 74. For a subtler effect, try pairing with an analogous color at hue 284. Use CSS: background: linear-gradient(135deg, #331f77, #61761e);
CSS Code for #331F77
Similar Colors
Colors visually similar to #331F77 based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #331F77 across image editing and color design tools.
About Color #331F77 (#331F77)
#331F77 is a blue color (colour) with RGB channel values of 51 red, 31 green, and 119 blue. The blue channel is dominant by a ratio of 3.8:1 over the weakest channel. In HSL terms, the hue sits at 254 degrees with 59% saturation and 29% lightness, placing it in the cool range of the colour spectrum.
The perceived brightness of #331F77 is 47/255 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 57% cyan, 74% magenta, 0% yellow, and 53% key (black).
The WCAG contrast ratio of #331F77 against white is 13.10:1 and against black is 1.60:1. 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 #61761E creates maximum visual tension when paired with #331F77. For more harmonious color combinations, use the analogous colours #1E3676 and #5E1E76, 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 #331F77
- 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 #331F77?
- #331F77 is Color #331F77, a blue color (colour) with RGB(51, 31, 119), HSL(254, 59%, 29%), and CMYK(57%, 74%, 0%, 53%). Its perceived brightness is 47/255.
- Is #331F77 accessible for text?
- Against white, #331F77 has a contrast ratio of 13.10:1 (passes AA for normal text). Against black, it has 1.60:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #331F77?
- The complementary colour is #61761E (hue 74). For subtle color combinations, use analogous colours #1E3676 and #5E1E76. The triadic palette adds #76331E and #1E7633 for vibrant variety.
- How do I use #331F77 in CSS?
- Use any format: color: #331f77; or rgb(51, 31, 119); or hsl(254, 59%, 29%). For CSS custom properties: --color-primary: 254 59% 29%; 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.