Recognised as Colour
#FFB439
- #FFB439
- Orange
- Light
- Nearest: Goldenrod
#FFB439 is a orange with RGB values 255, 180, 57 and HSL 37°, 100%, 61%. It is a light colour, so black text on it reaches 11.8:1 contrast (AAA for normal text). The nearest named colour is Goldenrod.
Colour values
#FFB439#FFB439
HEX#FFB439
RGBrgb(255, 180, 57)
RGB (0–1)1, 0.7059, 0.2235
RGB percentages100%, 70.6%, 22.4%
HSLhsl(37.3, 100%, 61.2%)
HSV / HSBhsv(37.3, 77.6%, 100%)
CMYK0%, 29.4%, 77.6%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,757,817
CSS custom property--colour: #FFB439;
Brightness & contrast
Relative luminance0.54198WCAG 2.x, 0 is black and 1 is white
Perceived brightness197.1 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.84:1
Contrast with white1.77:1WCAG normal text: Fail
Contrast with black11.84:1WCAG normal text: AAA
Greyscale equivalent#BBBBBB
Inverted#004BC6
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.77:1WCAG large text: Fail
Contrast with black, large text11.84:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#3984FF
Analogous#FF5139, #E7FF39
Triadic#39FFB4, #B439FF
Split complementary#39E7FF, #5139FF
Tetradic#39FF51, #3984FF, #FF39E7
Tints, shades & saturation
Channel breakdown
R255
G180
B57
Red255 (100%)
Green180 (70.6%)
Blue57 (22.4%)
Hue37.27°
Saturation (HSL)100%
Lightness61.18%
Dominant channelRed
Hex per channelR FF · G B4 · B 39
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Harmonies
Similar named colours
Also reads as
FFB439 (chemical formula)
- Formula
- 4,783.586 g/mol
- 441 atoms
FFB439 has a molar mass of 4,783.586 g/mol, made up of 441 atoms across 2 elements: 2 × F, 439 × B.
Molar mass
Molar mass4,783.586 g/mol
Total atoms per molecule441
Distinct elements2
Mass of one molecule7.9433314 × 10^-21 g
Molecules per gram1.2589176 × 10^20
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
F0.8%
B99.2%
Fluorine (F × 2)37.996 g/mol, 0.794%
Boron (B × 439)4,745.59 g/mol, 99.206%
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