Recognised as Colour
#FE275B
- #FE275B
- Red
- Dark
- Nearest: Crimson
#FE275B is a red with RGB values 254, 39, 91 and HSL 345°, 99%, 57%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#FE275B#FE275B
HEX#FE275B
RGBrgb(254, 39, 91)
RGB (0–1)0.9961, 0.1529, 0.3569
RGB percentages99.6%, 15.3%, 35.7%
HSLhsl(345.5, 99.1%, 57.5%)
HSV / HSBhsv(345.5, 84.6%, 99.6%)
CMYK0%, 84.6%, 64.2%, 0.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,656,219
CSS custom property--colour: #FE275B;
Brightness & contrast
Relative luminance0.23277WCAG 2.x, 0 is black and 1 is white
Perceived brightness145.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.66:1
Contrast with white3.71:1WCAG normal text: Fail
Contrast with black5.66:1WCAG normal text: AA
Greyscale equivalent#585858
Inverted#01D8A4
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.71:1WCAG large text: AA
Contrast with black, large text5.66:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#27FECA
Analogous#FE27C6, #FE5F27
Triadic#5BFE27, #275BFE
Split complementary#27FE5E, #27C7FE
Tetradic#C6FE27, #27FECA, #5F27FE
Tints, shades & saturation
Channel breakdown
R254
G39
B91
Red254 (99.6%)
Green39 (15.3%)
Blue91 (35.7%)
Hue345.49°
Saturation (HSL)99.08%
Lightness57.45%
Dominant channelRed
Hex per channelR FE · G 27 · B 5B
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Also reads as
Fe275B (chemical formula)
- Formula
- 15,368.185 g/mol
- 276 atoms
Fe275B has a molar mass of 15,368.185 g/mol, made up of 276 atoms across 2 elements: 275 × Fe, 1 × B.
Molar mass
Molar mass15,368.185 g/mol
Total atoms per molecule276
Distinct elements2
Mass of one molecule2.5519472 × 10^-20 g
Molecules per gram3.9185764 × 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
Fe99.9%
B0.1%
Iron (Fe × 275)15,357.375 g/mol, 99.93%
Boron (B)10.81 g/mol, 0.07%
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