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#ff631f

a balanced, electric orange · warm · closest name: tomato

RGB
255, 99, 31
HSL
18°, 100%, 56%
CMYK
0, 61, 88, 0
Luminance
0.3028

Every format

HEX#ff631f
RGBrgb(255, 99, 31)
HSLhsl(18, 100%, 56%)
CMYKcmyk(0%, 61%, 88%, 0%)
LABlab(61.9 56.6 64.0)
LCHlch(61.9 85.5 48.5)
OKLCHoklch(0.693 0.203 40.2)

Copy-ready code

/* CSS */
color: #ff631f;
background-color: #ff631f;
/* Tailwind (arbitrary) */
class="text-[#ff631f] bg-[#ff631f]"
/* SCSS */
$brand: #ff631f;
/* SwiftUI */
Color(red: 1.000, green: 0.388, blue: 0.122)
/* Android */
Color.parseColor("#ff631f")

Accessibility — WCAG contrast

Aa
#ff631f on white: 2.98:1
AA ✗ fail · AA-large · AAA
Aa
#ff631f on black: 7.06:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red100.0%
Green38.8%
Blue12.2%

CMYK percentages

Cyan0.0%
Magenta61.2%
Yellow87.8%
Key (black)0.0%

Color previews

#ff631f text on a black background

contrast 7.06:1

Card sample

#ff631f text on a white background

contrast 2.98:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #ff631f;
Background color
Panel with #ff631f background
background-color: #ff631f;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #ff631f;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(255, 99, 31, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(255, 99, 31, 0.45);
Border & gradient
Gradient panel
border: 3px solid #ff631f;
background: linear-gradient(135deg, #ff631f, #FFF81F);

Monochromatic scale

Palettes built from #ff631f

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #ff631f in the Color Lab