Recognised as Colour
#F74C40
- #F74C40
- Red
- Dark
- Nearest: Tomato
#F74C40 is a red with RGB values 247, 76, 64 and HSL 4°, 92%, 61%. It is a dark colour, so black text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Tomato.
Colour values
#F74C40#F74C40
HEX#F74C40
RGBrgb(247, 76, 64)
RGB (0–1)0.9686, 0.298, 0.251
RGB percentages96.9%, 29.8%, 25.1%
HSLhsl(3.9, 92%, 61%)
HSV / HSBhsv(3.9, 74.1%, 96.9%)
CMYK0%, 69.2%, 74.1%, 3.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,206,912
CSS custom property--colour: #F74C40;
Brightness & contrast
Relative luminance0.25313WCAG 2.x, 0 is black and 1 is white
Perceived brightness148.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.06:1
Contrast with white3.46:1WCAG normal text: Fail
Contrast with black6.06:1WCAG normal text: AA
Greyscale equivalent#6F6F6F
Inverted#08B3BF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.46:1WCAG large text: AA
Contrast with black, large text6.06:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#40EBF7
Analogous#F74090, #F7A740
Triadic#40F74C, #4C40F7
Split complementary#40F7A7, #4090F7
Tetradic#90F740, #40EBF7, #A840F7
Tints, shades & saturation
Channel breakdown
R247
G76
B64
Red247 (96.9%)
Green76 (29.8%)
Blue64 (25.1%)
Hue3.93°
Saturation (HSL)91.96%
Lightness60.98%
Dominant channelRed
Hex per channelR F7 · G 4C · B 40
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Also reads as
F74C40 (chemical formula)
- Formula
- 1,886.292 g/mol
- 114 atoms
F74C40 has a molar mass of 1,886.292 g/mol, made up of 114 atoms across 2 elements: 74 × F, 40 × C.
Molar mass
Molar mass1,886.292 g/mol
Total atoms per molecule114
Distinct elements2
Mass of one molecule3.1322616 × 10^-21 g
Molecules per gram3.1925814 × 10^20
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
F74.5%
C25.5%
Fluorine (F × 74)1,405.852 g/mol, 74.53%
Carbon (C × 40)480.44 g/mol, 25.47%
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