Recognised as Colour
#F56B3B
- #F56B3B
- Orange
- Dark
- Nearest: Coral
#F56B3B is a orange with RGB values 245, 107, 59 and HSL 15°, 90%, 60%. It is a dark colour, so black text on it reaches 7:1 contrast (AAA for normal text). The nearest named colour is Coral.
Colour values
#F56B3B#F56B3B
HEX#F56B3B
RGBrgb(245, 107, 59)
RGB (0–1)0.9608, 0.4196, 0.2314
RGB percentages96.1%, 42%, 23.1%
HSLhsl(15.5, 90.3%, 59.6%)
HSV / HSBhsv(15.5, 75.9%, 96.1%)
CMYK0%, 56.3%, 75.9%, 3.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,083,771
CSS custom property--colour: #F56B3B;
Brightness & contrast
Relative luminance0.30244WCAG 2.x, 0 is black and 1 is white
Perceived brightness158.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.05:1
Contrast with white2.98:1WCAG normal text: Fail
Contrast with black7.05:1WCAG normal text: AAA
Greyscale equivalent#858585
Inverted#0A94C4
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.98:1WCAG large text: Fail
Contrast with black, large text7.05:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#3BC5F5
Analogous#F53B68, #F5C83B
Triadic#3BF56B, #6B3BF5
Split complementary#3BF5C8, #3B68F5
Tetradic#68F53B, #3BC5F5, #C83BF5
Tints, shades & saturation
Channel breakdown
R245
G107
B59
Red245 (96.1%)
Green107 (42%)
Blue59 (23.1%)
Hue15.48°
Saturation (HSL)90.29%
Lightness59.61%
Dominant channelRed
Hex per channelR F5 · G 6B · B 3B
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Also reads as
F56B3B (chemical formula)
- Formula
- 1,107.128 g/mol
- 60 atoms
F56B3B has a molar mass of 1,107.128 g/mol, made up of 60 atoms across 2 elements: 56 × F, 4 × B.
Molar mass
Molar mass1,107.128 g/mol
Total atoms per molecule60
Distinct elements2
Mass of one molecule1.8384293 × 10^-21 g
Molecules per gram5.4394259 × 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
F96.1%
B3.9%
Fluorine (F × 56)1,063.888 g/mol, 96.094%
Boron (B × 4)43.24 g/mol, 3.906%
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