Recognised as Colour
#FC3905
- #FC3905
- Red
- Dark
- Nearest: Orange red
#FC3905 is a red with RGB values 252, 57, 5 and HSL 13°, 98%, 50%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Orange red.
Colour values
#FC3905#FC3905
HEX#FC3905
RGBrgb(252, 57, 5)
RGB (0–1)0.9882, 0.2235, 0.0196
RGB percentages98.8%, 22.4%, 2%
HSLhsl(12.6, 97.6%, 50.4%)
HSV / HSBhsv(12.6, 98%, 98.8%)
CMYK0%, 77.4%, 98%, 1.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,529,669
CSS custom property--colour: #FC3905;
Brightness & contrast
Relative luminance0.23633WCAG 2.x, 0 is black and 1 is white
Perceived brightness144.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.73:1
Contrast with white3.67:1WCAG normal text: Fail
Contrast with black5.73:1WCAG normal text: AA
Greyscale equivalent#5F5F5F
Inverted#03C6FA
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.67:1WCAG large text: AA
Contrast with black, large text5.73:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#05C8FC
Analogous#FC054C, #FCB505
Triadic#05FC39, #3905FC
Split complementary#05FCB5, #054CFC
Tetradic#4CFC05, #05C8FC, #B505FC
Tints, shades & saturation
Channel breakdown
R252
G57
B5
Red252 (98.8%)
Green57 (22.4%)
Blue5 (2%)
Hue12.63°
Saturation (HSL)97.63%
Lightness50.39%
Dominant channelRed
Hex per channelR FC · G 39 · B 05
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Also reads as
FC3905 (chemical formula)
- Formula
- 46,921.953 g/mol
- 3906 atoms
FC3905 has a molar mass of 46,921.953 g/mol, made up of 3906 atoms across 2 elements: 1 × F, 3905 × C.
Molar mass
Molar mass46,921.953 g/mol
Total atoms per molecule3906
Distinct elements2
Mass of one molecule7.7915736 × 10^-20 g
Molecules per gram1.2834378 × 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
F0%
C100%
Fluorine (F)18.998 g/mol, 0.04%
Carbon (C × 3905)46,902.955 g/mol, 99.96%
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