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💡 Click on any color value below to copy it to clipboard
Running Number
4,331,304
HEX
#421728
RGB
66, 23, 40
HSL
336°,48%,17%
HSV
336°,65%,26%
CMYK
0%,65%,39%,74%
Brightness
15%
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
#421728 sits at 336° on the color wheel, placing it in the rose family of the warm half of the spectrum. With 48% saturation and 17% lightness, it reads as a moderately saturated, deep tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 66, 23, 40 produces a 15.16:1 contrast ratio against white, which clears WCAG AAA for body text in that pairing.
In RGB space #421728 is a distant relative of CSS maroon — about 77 units away from #800000. Designers reach for rose hues at this saturation when the brief calls for a conversational, mid-energy register, and at this lightness when they want weight, depth, and grounded contrast. 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 #421728 in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#421728";💡 Click any tab to see how to use #421728 in different programming languages