Recognised as Colour
#FF1201
- #FF1201
- Red
- Dark
- Nearest: Red
#FF1201 is a red with RGB values 255, 18, 1 and HSL 4°, 100%, 50%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Red.
Colour values
#FF1201#FF1201
HEX#FF1201
RGBrgb(255, 18, 1)
RGB (0–1)1, 0.0706, 0.0039
RGB percentages100%, 7.1%, 0.4%
HSLhsl(4, 100%, 50.2%)
HSV / HSBhsv(4, 99.6%, 100%)
CMYK0%, 92.9%, 99.6%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,716,289
CSS custom property--colour: #FF1201;
Brightness & contrast
Relative luminance0.21695WCAG 2.x, 0 is black and 1 is white
Perceived brightness140.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.34:1
Contrast with white3.93:1WCAG normal text: Fail
Contrast with black5.34:1WCAG normal text: AA
Greyscale equivalent#434343
Inverted#00EDFE
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.93:1WCAG large text: AA
Contrast with black, large text5.34:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#01EEFF
Analogous#FF016F, #FF9101
Triadic#01FF12, #1201FF
Split complementary#01FF91, #016FFF
Tetradic#6FFF01, #01EEFF, #9101FF
Tints, shades & saturation
Channel breakdown
R255
G18
B1
Red255 (100%)
Green18 (7.1%)
Blue1 (0.4%)
Hue4.02°
Saturation (HSL)100%
Lightness50.2%
Dominant channelRed
Hex per channelR FF · G 12 · B 01
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Also reads as
FF1201 (chemical formula)
- Formula
- 22,835.596 g/mol
- 1202 atoms
FF1201 has a molar mass of 22,835.596 g/mol, made up of 1202 atoms across 1 element: 1202 × F.
Molar mass
Molar mass22,835.596 g/mol
Total atoms per molecule1202
Distinct elements1
Mass of one molecule3.7919399 × 10^-20 g
Molecules per gram2.6371726 × 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
F100%
Fluorine (F × 1202)22,835.596 g/mol, 100%
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