Recognised as Colour
#FC3405
- #FC3405
- Red
- Dark
- Nearest: Orange red
#FC3405 is a red with RGB values 252, 52, 5 and HSL 11°, 98%, 50%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Orange red.
Colour values
#FC3405#FC3405
HEX#FC3405
RGBrgb(252, 52, 5)
RGB (0–1)0.9882, 0.2039, 0.0196
RGB percentages98.8%, 20.4%, 2%
HSLhsl(11.4, 97.6%, 50.4%)
HSV / HSBhsv(11.4, 98%, 98.8%)
CMYK0%, 79.4%, 98%, 1.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,528,389
CSS custom property--colour: #FC3405;
Brightness & contrast
Relative luminance0.23162WCAG 2.x, 0 is black and 1 is white
Perceived brightness143.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.63:1
Contrast with white3.73:1WCAG normal text: Fail
Contrast with black5.63:1WCAG normal text: AA
Greyscale equivalent#5B5B5B
Inverted#03CBFA
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.73:1WCAG large text: AA
Contrast with black, large text5.63:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#05CDFC
Analogous#FC0551, #FCB005
Triadic#05FC34, #3405FC
Split complementary#05FCB0, #0551FC
Tetradic#51FC05, #05CDFC, #B005FC
Tints, shades & saturation
Channel breakdown
R252
G52
B5
Red252 (98.8%)
Green52 (20.4%)
Blue5 (2%)
Hue11.42°
Saturation (HSL)97.63%
Lightness50.39%
Dominant channelRed
Hex per channelR FC · G 34 · B 05
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Also reads as
FC3405 (chemical formula)
- Formula
- 40,916.453 g/mol
- 3406 atoms
FC3405 has a molar mass of 40,916.453 g/mol, made up of 3406 atoms across 2 elements: 1 × F, 3405 × C.
Molar mass
Molar mass40,916.453 g/mol
Total atoms per molecule3406
Distinct elements2
Mass of one molecule6.7943369 × 10^-20 g
Molecules per gram1.471814 × 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, 0.046%
Carbon (C × 3405)40,897.455 g/mol, 99.954%
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