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Running Number
16,269,887
HEX
#F8423F
RGB
248, 66, 63
HSL
1°,93%,61%
HSV
1°,75%,97%
CMYK
0%,73%,75%,3%
Brightness
47%
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
#F8423F sits at 1° on the color wheel, placing it in the red family of the warm half of the spectrum. With 93% saturation and 61% lightness, it reads as a fully saturated, light tone — an immediate, signal-grade voice that demands attention. Its RGB mix of 248, 66, 63 produces a 5.84:1 contrast ratio against black, which clears WCAG AA for body text in that pairing.
In RGB space #F8423F is a clear variant of CSS tomato — about 35 units away from #FF6347. 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 #F8423F in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#f8423f";💡 Click any tab to see how to use #f8423f in different programming languages