Color #231F0B Color / Colour Code #231F0B
This page shows the hex color code for color #231f0b (#231F0B). The colour is a yellow tone with 52% saturation and 9% lightness. Explore its conversions, colour palettes, gradients, accessibility data, and CSS code below.
Color Conversions
Accessibility Contrast
WCAG contrast ratios for #231F0B against common backgrounds.
Complementary Colors
#231F0B paired with its color wheel opposite for maximum contrast.
Analogous Colors
Hues at 20, 50, and 80 degrees for harmonious combinations.
Triadic Palette
Three colors at 50, 170, and 290 degrees.
Color Palettes Using #231F0B
Five shades at lightness levels 15% through 85% while keeping hue at 50 and saturation at 52%. Use the darkest shade for text and the lightest for backgrounds to build a cohesive single-hue design system.
Adjacent hues from 50 to 95 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 50 with its complement at 230 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 #231F0B
Lightness variations at hue 50 and 52% saturation.
CSS Gradients with #231F0B
Design Use Cases for #231F0B
Balanced UI Color
At 52% saturation, #231F0B 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, #231F0B 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.
Attention & Optimism
#231F0B is in the yellow spectrum (hue 50). Yellow attracts attention faster than any other color. Use it for warning labels, featured content markers, star ratings, and tooltip backgrounds. Pair with dark text since yellow often fails contrast checks against white.
Gradient Pairing
Create a gradient from #231F0B (hue 50) to its complement at hue 230. For a subtler effect, try pairing with an analogous color at hue 80. Use CSS: background: linear-gradient(135deg, #231f0b, #0b0f23);
CSS Code for #231F0B
Similar Colors
Colors visually similar to #231F0B based on RGB, lightness, and hue variations.
Use This Color in Design Tools
Apply #231F0B across image editing and color design tools.
About Color #231F0B (#231F0B)
#231F0B is a yellow color (colour) with RGB channel values of 35 red, 31 green, and 11 blue. The red channel is dominant by a ratio of 3.2:1 over the weakest channel. In HSL terms, the hue sits at 50 degrees with 52% saturation and 9% lightness, placing it in the warm range of the colour spectrum.
The perceived brightness of #231F0B is 30/255 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 0% cyan, 11% magenta, 69% yellow, and 86% key (black).
The WCAG contrast ratio of #231F0B against white is 16.51:1 and against black is 1.27:1. 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 #0B0F23 creates maximum visual tension when paired with #231F0B. For more harmonious color combinations, use the analogous colours #23130B and #1B230B, 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 #231F0B
- 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 #231F0B?
- #231F0B is Color #231F0B, a yellow color (colour) with RGB(35, 31, 11), HSL(50, 52%, 9%), and CMYK(0%, 11%, 69%, 86%). Its perceived brightness is 30/255.
- Is #231F0B accessible for text?
- Against white, #231F0B has a contrast ratio of 16.51:1 (passes AA for normal text). Against black, it has 1.27:1 (fails AA). Use the contrast checker tool for custom background pairings.
- What colours pair well with #231F0B?
- The complementary colour is #0B0F23 (hue 230). For subtle color combinations, use analogous colours #23130B and #1B230B. The triadic palette adds #0B231F and #1F0B23 for vibrant variety.
- How do I use #231F0B in CSS?
- Use any format: color: #231f0b; or rgb(35, 31, 11); or hsl(50, 52%, 9%). For CSS custom properties: --color-primary: 50 52% 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.