Recognised as Colour
#F30030
- #F30030
- Red
- Dark
- Nearest: Crimson
#F30030 is a red with RGB values 243, 0, 48 and HSL 348°, 100%, 48%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#F30030#F30030
HEX#F30030
RGBrgb(243, 0, 48)
RGB (0–1)0.9529, 0, 0.1882
RGB percentages95.3%, 0%, 18.8%
HSLhsl(348.1, 100%, 47.6%)
HSV / HSBhsv(348.1, 100%, 95.3%)
CMYK0%, 100%, 80.2%, 4.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,925,296
CSS custom property--colour: #F30030;
Brightness & contrast
Relative luminance0.19268WCAG 2.x, 0 is black and 1 is white
Perceived brightness133.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.85:1
Contrast with white4.33:1WCAG normal text: Fail
Contrast with black4.85:1WCAG normal text: AA
Greyscale equivalent#373737
Inverted#0CFFCF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.33:1WCAG large text: AA
Contrast with black, large text4.85:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#00F3C3
Analogous#F300A9, #F34A00
Triadic#30F300, #0030F3
Split complementary#00F34A, #00A9F3
Tetradic#A9F300, #00F3C3, #4A00F3
Tints, shades & saturation
Channel breakdown
R243
G0
B48
Red243 (95.3%)
Green0 (0%)
Blue48 (18.8%)
Hue348.15°
Saturation (HSL)100%
Lightness47.65%
Dominant channelRed
Hex per channelR F3 · G 00 · B 30
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Also reads as
F30030 (chemical formula)
- Formula
- 570,509.94 g/mol
- 30030 atoms
F30030 has a molar mass of 570,509.94 g/mol, made up of 30030 atoms across 1 element: 30030 × F.
Molar mass
Molar mass570,509.94 g/mol
Total atoms per molecule30030
Distinct elements1
Mass of one molecule9.4735404 × 10^-19 g
Molecules per gram1.0555716 × 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 × 30030)570,509.94 g/mol, 100%
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