Recognised as Colour
#FC1304
- #FC1304
- Red
- Dark
- Nearest: Red
#FC1304 is a red with RGB values 252, 19, 4 and HSL 4°, 98%, 50%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Red.
Colour values
#FC1304#FC1304
HEX#FC1304
RGBrgb(252, 19, 4)
RGB (0–1)0.9882, 0.0745, 0.0157
RGB percentages98.8%, 7.5%, 1.6%
HSLhsl(3.6, 97.6%, 50.2%)
HSV / HSBhsv(3.6, 98.4%, 98.8%)
CMYK0%, 92.5%, 98.4%, 1.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,519,940
CSS custom property--colour: #FC1304;
Brightness & contrast
Relative luminance0.2117WCAG 2.x, 0 is black and 1 is white
Perceived brightness138.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.23:1
Contrast with white4.01:1WCAG normal text: Fail
Contrast with black5.23:1WCAG normal text: AA
Greyscale equivalent#434343
Inverted#03ECFB
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.01:1WCAG large text: AA
Contrast with black, large text5.23:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#04EDFC
Analogous#FC0471, #FC8F04
Triadic#04FC13, #1304FC
Split complementary#04FC8F, #0471FC
Tetradic#71FC04, #04EDFC, #8F04FC
Tints, shades & saturation
Channel breakdown
R252
G19
B4
Red252 (98.8%)
Green19 (7.5%)
Blue4 (1.6%)
Hue3.63°
Saturation (HSL)97.64%
Lightness50.2%
Dominant channelRed
Hex per channelR FC · G 13 · B 04
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Also reads as
FC1304 (chemical formula)
- Formula
- 15,681.342 g/mol
- 1305 atoms
FC1304 has a molar mass of 15,681.342 g/mol, made up of 1305 atoms across 2 elements: 1 × F, 1304 × C.
Molar mass
Molar mass15,681.342 g/mol
Total atoms per molecule1305
Distinct elements2
Mass of one molecule2.6039481 × 10^-20 g
Molecules per gram3.8403223 × 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
F0.1%
C99.9%
Fluorine (F)18.998 g/mol, 0.121%
Carbon (C × 1304)15,662.344 g/mol, 99.879%
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