Recognised as Colour
#FCA311
- #FCA311
- Orange
- Dark
- Nearest: Orange
#FCA311 is a orange with RGB values 252, 163, 17 and HSL 37°, 98%, 53%. It is a dark colour, so black text on it reaches 10.4:1 contrast (AAA for normal text). The nearest named colour is Orange.
Colour values
#FCA311#FCA311
HEX#FCA311
RGBrgb(252, 163, 17)
RGB (0–1)0.9882, 0.6392, 0.0667
RGB percentages98.8%, 63.9%, 6.7%
HSLhsl(37.3, 97.5%, 52.7%)
HSV / HSBhsv(37.3, 93.3%, 98.8%)
CMYK0%, 35.3%, 93.3%, 1.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,556,817
CSS custom property--colour: #FCA311;
Brightness & contrast
Relative luminance0.4693WCAG 2.x, 0 is black and 1 is white
Perceived brightness186.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.39:1
Contrast with white2.02:1WCAG normal text: Fail
Contrast with black10.39:1WCAG normal text: AAA
Greyscale equivalent#ABABAB
Inverted#035CEE
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.02:1WCAG large text: Fail
Contrast with black, large text10.39:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#116AFC
Analogous#FC2D11, #E0FC11
Triadic#11FCA3, #A311FC
Split complementary#11DFFC, #2E11FC
Tetradic#11FC2D, #116AFC, #FC11DF
Tints, shades & saturation
Channel breakdown
R252
G163
B17
Red252 (98.8%)
Green163 (63.9%)
Blue17 (6.7%)
Hue37.28°
Saturation (HSL)97.51%
Lightness52.75%
Dominant channelRed
Hex per channelR FC · G A3 · B 11
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Harmonies
Similar named colours
Also reads as
FCa311 (chemical formula)
- Formula
- 12,483.256 g/mol
- 312 atoms
FCa311 has a molar mass of 12,483.256 g/mol, made up of 312 atoms across 2 elements: 1 × F, 311 × Ca.
Molar mass
Molar mass12,483.256 g/mol
Total atoms per molecule312
Distinct elements2
Mass of one molecule2.0728934 × 10^-20 g
Molecules per gram4.8241747 × 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
F0.2%
Ca99.8%
Fluorine (F)18.998 g/mol, 0.152%
Calcium (Ca × 311)12,464.258 g/mol, 99.848%
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