Recognised as Colour
#FF4520
- #FF4520
- Red
- Dark
- Nearest: Orange red
#FF4520 is a red with RGB values 255, 69, 32 and HSL 10°, 100%, 56%. It is a dark colour, so black text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Orange red.
Colour values
#FF4520#FF4520
HEX#FF4520
RGBrgb(255, 69, 32)
RGB (0–1)1, 0.2706, 0.1255
RGB percentages100%, 27.1%, 12.5%
HSLhsl(10, 100%, 56.3%)
HSV / HSBhsv(10, 87.5%, 100%)
CMYK0%, 72.9%, 87.5%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,729,376
CSS custom property--colour: #FF4520;
Brightness & contrast
Relative luminance0.25621WCAG 2.x, 0 is black and 1 is white
Perceived brightness149.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.12:1
Contrast with white3.43:1WCAG normal text: Fail
Contrast with black6.12:1WCAG normal text: AA
Greyscale equivalent#6A6A6A
Inverted#00BADF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.43:1WCAG large text: AA
Contrast with black, large text6.12:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#20DAFF
Analogous#FF206B, #FFB420
Triadic#20FF45, #4520FF
Split complementary#20FFB4, #206BFF
Tetradic#6BFF20, #20DAFF, #B420FF
Tints, shades & saturation
Channel breakdown
R255
G69
B32
Red255 (100%)
Green69 (27.1%)
Blue32 (12.5%)
Hue9.96°
Saturation (HSL)100%
Lightness56.27%
Dominant channelRed
Hex per channelR FF · G 45 · B 20
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Also reads as
FF4520 (chemical formula)
- Formula
- 85,889.958 g/mol
- 4521 atoms
FF4520 has a molar mass of 85,889.958 g/mol, made up of 4521 atoms across 1 element: 4521 × F.
Molar mass
Molar mass85,889.958 g/mol
Total atoms per molecule4521
Distinct elements1
Mass of one molecule1.4262363 × 10^-19 g
Molecules per gram7.0114608 × 10^18
Name
NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show
Composition by mass
F100%
Fluorine (F × 4521)85,889.958 g/mol, 100%
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