Recognised as Colour
#FF8B40
- #FF8B40
- Orange
- Dark
- Nearest: Coral
#FF8B40 is a orange with RGB values 255, 139, 64 and HSL 24°, 100%, 63%. It is a dark colour, so black text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Coral.
Colour values
#FF8B40#FF8B40
HEX#FF8B40
RGBrgb(255, 139, 64)
RGB (0–1)1, 0.5451, 0.251
RGB percentages100%, 54.5%, 25.1%
HSLhsl(23.6, 100%, 62.5%)
HSV / HSBhsv(23.6, 74.9%, 100%)
CMYK0%, 45.5%, 74.9%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,747,328
CSS custom property--colour: #FF8B40;
Brightness & contrast
Relative luminance0.40095WCAG 2.x, 0 is black and 1 is white
Perceived brightness176.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.02:1
Contrast with white2.33:1WCAG normal text: Fail
Contrast with black9.02:1WCAG normal text: AAA
Greyscale equivalent#9E9E9E
Inverted#0074BF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.33:1WCAG large text: Fail
Contrast with black, large text9.02:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#40B4FF
Analogous#FF4054, #FFEB40
Triadic#40FF8B, #8B40FF
Split complementary#40FFEA, #4055FF
Tetradic#54FF40, #40B4FF, #EA40FF
Tints, shades & saturation
Channel breakdown
R255
G139
B64
Red255 (100%)
Green139 (54.5%)
Blue64 (25.1%)
Hue23.56°
Saturation (HSL)100%
Lightness62.55%
Dominant channelRed
Hex per channelR FF · G 8B · B 40
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Harmonies
Similar named colours
Also reads as
FF8B40 (chemical formula)
- Formula
- 603.382 g/mol
- 49 atoms
FF8B40 has a molar mass of 603.382 g/mol, made up of 49 atoms across 2 elements: 9 × F, 40 × B.
Molar mass
Molar mass603.382 g/mol
Total atoms per molecule49
Distinct elements2
Mass of one molecule1.0019394 × 10^-21 g
Molecules per gram9.9806437 × 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
F28.3%
B71.7%
Fluorine (F × 9)170.982 g/mol, 28.337%
Boron (B × 40)432.4 g/mol, 71.663%
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