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💡 Click on any color value below to copy it to clipboard
Running Number
15,144,988
HEX
#E7181C
RGB
231, 24, 28
HSL
359°,81%,50%
HSV
359°,90%,91%
CMYK
0%,90%,88%,9%
Brightness
34%
Type
Dark
AA Normal Text: ≥ 4.5:1
AA Large Text: ≥ 3.0:1
AAA Normal Text: ≥ 7.0:1
AAA Large Text: ≥ 4.5:1
#E7181C sits at 359° on the color wheel, placing it in the red family of the warm half of the spectrum. With 81% saturation and 50% lightness, it reads as a richly saturated, balanced tone — an immediate, signal-grade voice that demands attention. Its RGB mix of 231, 24, 28 produces a 4.62:1 contrast ratio against white, which clears WCAG AA for body text in that pairing.
In RGB space #E7181C is a clear variant of CSS crimson — about 34 units away from #DC143C. Designers reach for red hues at this saturation when the brief calls for bold, immediate signal, and at this lightness when they want a present, comfortable mid-canvas voice. On screen the warm cast tends to pair best with cool neutrals around 210°-230° to balance temperature.
See how this color appears in real UI elements
Button (filled)
Badge
Progress Bar
Link Hover
Input Focus Ring
Checkbox Active
Toggle Switch On
Slider Thumb
Card Border
Icon Highlight
Tooltip Background
Modal Header
Tab Active
Alert Box
Timeline Dot
Loading Spinner
Dropdown Selected
Table Row Highlight
Calendar Date
Mobile Device
See how to use #E7181C in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#e7181c";💡 Click any tab to see how to use #e7181c in different programming languages