Recognised as Colour
#F3F5FB
- #F3F5FB
- Blue
- Light
- Nearest: Ghost white
#F3F5FB is a blue with RGB values 243, 245, 251 and HSL 225°, 50%, 97%. It is a light colour, so black text on it reaches 19.3:1 contrast (AAA for normal text). The nearest named colour is Ghost white.
Colour values
#F3F5FB#F3F5FB
HEX#F3F5FB
RGBrgb(243, 245, 251)
RGB (0–1)0.9529, 0.9608, 0.9843
RGB percentages95.3%, 96.1%, 98.4%
HSLhsl(225, 50%, 96.9%)
HSV / HSBhsv(225, 3.2%, 98.4%)
CMYK3.2%, 2.4%, 0%, 1.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,988,219
CSS custom property--colour: #F3F5FB;
Brightness & contrast
Relative luminance0.91325WCAG 2.x, 0 is black and 1 is white
Perceived brightness245.1 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 19.26:1
Contrast with white1.09:1WCAG normal text: Fail
Contrast with black19.26:1WCAG normal text: AAA
Greyscale equivalent#F5F5F5
Inverted#0C0A04
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.09:1WCAG large text: Fail
Contrast with black, large text19.26:1WCAG large text: AAA
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#FBF9F3
Analogous#F3F9FB, #F5F3FB
Triadic#FBF3F5, #F5FBF3
Split complementary#FBF5F3, #F9FBF3
Tetradic#FBF3F9, #FBF9F3, #F3FBF5
Tints, shades & saturation
Channel breakdown
R243
G245
B251
Red243 (95.3%)
Green245 (96.1%)
Blue251 (98.4%)
Hue225°
Saturation (HSL)50%
Lightness96.86%
Dominant channelBlue
Hex per channelR F3 · G F5 · B FB
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Harmonies
Similar named colours
Also reads as
F3F5FB (chemical formula)
- Formula
- 181.792 g/mol
- 10 atoms
F3F5FB has a molar mass of 181.792 g/mol, made up of 10 atoms across 2 elements: 9 × F, 1 × B.
Molar mass
Molar mass181.792 g/mol
Total atoms per molecule10
Distinct elements2
Mass of one molecule3.0187272 × 10^-22 g
Molecules per gram3.3126544 × 10^21
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
F94.1%
B5.9%
Fluorine (F × 9)170.982 g/mol, 94.054%
Boron (B)10.81 g/mol, 5.946%
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