Recognised as Colour
#F3352B
- #F3352B
- Red
- Dark
- Nearest: Tomato
#F3352B is a red with RGB values 243, 53, 43 and HSL 3°, 89%, 56%. It is a dark colour, so black text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Tomato.
Colour values
#F3352B#F3352B
HEX#F3352B
RGBrgb(243, 53, 43)
RGB (0–1)0.9529, 0.2078, 0.1686
RGB percentages95.3%, 20.8%, 16.9%
HSLhsl(3, 89.3%, 56.1%)
HSV / HSBhsv(3, 82.3%, 95.3%)
CMYK0%, 78.2%, 82.3%, 4.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,938,859
CSS custom property--colour: #F3352B;
Brightness & contrast
Relative luminance0.21775WCAG 2.x, 0 is black and 1 is white
Perceived brightness139.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.36:1
Contrast with white3.92:1WCAG normal text: Fail
Contrast with black5.36:1WCAG normal text: AA
Greyscale equivalent#5D5D5D
Inverted#0CCAD4
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.92:1WCAG large text: AA
Contrast with black, large text5.36:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#2BE9F3
Analogous#F32B85, #F3992B
Triadic#2BF335, #352BF3
Split complementary#2BF399, #2B85F3
Tetradic#85F32B, #2BE9F3, #992BF3
Tints, shades & saturation
Channel breakdown
R243
G53
B43
Red243 (95.3%)
Green53 (20.8%)
Blue43 (16.9%)
Hue3°
Saturation (HSL)89.29%
Lightness56.08%
Dominant channelRed
Hex per channelR F3 · G 35 · B 2B
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Also reads as
F3352B (chemical formula)
- Formula
- 63,692.106 g/mol
- 3353 atoms
F3352B has a molar mass of 63,692.106 g/mol, made up of 3353 atoms across 2 elements: 3352 × F, 1 × B.
Molar mass
Molar mass63,692.106 g/mol
Total atoms per molecule3353
Distinct elements2
Mass of one molecule1.0576323 × 10^-19 g
Molecules per gram9.4550819 × 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%
B0%
Fluorine (F × 3352)63,681.296 g/mol, 99.983%
Boron (B)10.81 g/mol, 0.017%
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