Recognised as Colour
#F33108
- #F33108
- Red
- Dark
- Nearest: Orange red
#F33108 is a red with RGB values 243, 49, 8 and HSL 10°, 94%, 49%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Orange red.
Colour values
#F33108#F33108
HEX#F33108
RGBrgb(243, 49, 8)
RGB (0–1)0.9529, 0.1922, 0.0314
RGB percentages95.3%, 19.2%, 3.1%
HSLhsl(10.5, 93.6%, 49.2%)
HSV / HSBhsv(10.5, 96.7%, 95.3%)
CMYK0%, 79.8%, 96.7%, 4.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,937,800
CSS custom property--colour: #F33108;
Brightness & contrast
Relative luminance0.21269WCAG 2.x, 0 is black and 1 is white
Perceived brightness138.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.25:1
Contrast with white4:1WCAG normal text: Fail
Contrast with black5.25:1WCAG normal text: AA
Greyscale equivalent#575757
Inverted#0CCEF7
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4:1WCAG large text: AA
Contrast with black, large text5.25:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#08CAF3
Analogous#F30854, #F3A708
Triadic#08F331, #3108F3
Split complementary#08F3A7, #0854F3
Tetradic#54F308, #08CAF3, #A708F3
Tints, shades & saturation
Channel breakdown
R243
G49
B8
Red243 (95.3%)
Green49 (19.2%)
Blue8 (3.1%)
Hue10.47°
Saturation (HSL)93.63%
Lightness49.22%
Dominant channelRed
Hex per channelR F3 · G 31 · B 08
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Also reads as
F33108 (chemical formula)
- Formula
- 628,985.784 g/mol
- 33108 atoms
F33108 has a molar mass of 628,985.784 g/mol, made up of 33108 atoms across 1 element: 33108 × F.
Molar mass
Molar mass628,985.784 g/mol
Total atoms per molecule33108
Distinct elements1
Mass of one molecule1.0444555 × 10^-18 g
Molecules per gram9.574367 × 10^17
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 × 33108)628,985.784 g/mol, 100%
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