Recognised as Colour
#FF288B
- #FF288B
- Red
- Dark
- Nearest: Deep pink
#FF288B is a red with RGB values 255, 40, 139 and HSL 332°, 100%, 58%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Deep pink.
Colour values
#FF288B#FF288B
HEX#FF288B
RGBrgb(255, 40, 139)
RGB (0–1)1, 0.1569, 0.5451
RGB percentages100%, 15.7%, 54.5%
HSLhsl(332.4, 100%, 57.8%)
HSV / HSBhsv(332.4, 84.3%, 100%)
CMYK0%, 84.3%, 45.5%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,722,059
CSS custom property--colour: #FF288B;
Brightness & contrast
Relative luminance0.24642WCAG 2.x, 0 is black and 1 is white
Perceived brightness150.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.93:1
Contrast with white3.54:1WCAG normal text: Fail
Contrast with black5.93:1WCAG normal text: AA
Greyscale equivalent#5D5D5D
Inverted#00D774
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.54:1WCAG large text: AA
Contrast with black, large text5.93:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#28FF9C
Analogous#FF28F6, #FF3128
Triadic#8BFF28, #288BFF
Split complementary#28FF31, #28F6FF
Tetradic#F6FF28, #28FF9C, #3128FF
Tints, shades & saturation
Channel breakdown
R255
G40
B139
Red255 (100%)
Green40 (15.7%)
Blue139 (54.5%)
Hue332.37°
Saturation (HSL)100%
Lightness57.84%
Dominant channelRed
Hex per channelR FF · G 28 · B 8B
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Harmonies
Similar named colours
Also reads as
FF288B (chemical formula)
- Formula
- 5,501.232 g/mol
- 290 atoms
FF288B has a molar mass of 5,501.232 g/mol, made up of 290 atoms across 2 elements: 289 × F, 1 × B.
Molar mass
Molar mass5,501.232 g/mol
Total atoms per molecule290
Distinct elements2
Mass of one molecule9.1350107 × 10^-21 g
Molecules per gram1.0946895 × 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
F99.8%
B0.2%
Fluorine (F × 289)5,490.422 g/mol, 99.803%
Boron (B)10.81 g/mol, 0.197%
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