Recognised as Colour
#FF374C
- #FF374C
- Red
- Dark
- Nearest: Crimson
#FF374C is a red with RGB values 255, 55, 76 and HSL 354°, 100%, 61%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#FF374C#FF374C
HEX#FF374C
RGBrgb(255, 55, 76)
RGB (0–1)1, 0.2157, 0.298
RGB percentages100%, 21.6%, 29.8%
HSLhsl(353.7, 100%, 60.8%)
HSV / HSBhsv(353.7, 78.4%, 100%)
CMYK0%, 78.4%, 70.2%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,725,836
CSS custom property--colour: #FF374C;
Brightness & contrast
Relative luminance0.24514WCAG 2.x, 0 is black and 1 is white
Perceived brightness147.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.9:1
Contrast with white3.56:1WCAG normal text: Fail
Contrast with black5.9:1WCAG normal text: AA
Greyscale equivalent#636363
Inverted#00C8B3
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.56:1WCAG large text: AA
Contrast with black, large text5.9:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#37FFEA
Analogous#FF37B0, #FF8637
Triadic#4CFF37, #374CFF
Split complementary#37FF86, #37B0FF
Tetradic#B0FF37, #37FFEA, #8637FF
Tints, shades & saturation
Channel breakdown
R255
G55
B76
Red255 (100%)
Green55 (21.6%)
Blue76 (29.8%)
Hue353.7°
Saturation (HSL)100%
Lightness60.78%
Dominant channelRed
Hex per channelR FF · G 37 · B 4C
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Also reads as
FF374C (chemical formula)
- Formula
- 7,136.261 g/mol
- 376 atoms
FF374C has a molar mass of 7,136.261 g/mol, made up of 376 atoms across 2 elements: 375 × F, 1 × C.
Molar mass
Molar mass7,136.261 g/mol
Total atoms per molecule376
Distinct elements2
Mass of one molecule1.185004 × 10^-20 g
Molecules per gram8.4387899 × 10^19
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
F99.8%
C0.2%
Fluorine (F × 375)7,124.25 g/mol, 99.832%
Carbon (C)12.011 g/mol, 0.168%
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