Recognised as Colour
#B22B48
- #B22B48
- Red
- Dark
- Nearest: Brown
#B22B48 is a red with RGB values 178, 43, 72 and HSL 347°, 61%, 43%. It is a dark colour, so white text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Brown.
Colour values
#B22B48#B22B48
HEX#B22B48
RGBrgb(178, 43, 72)
RGB (0–1)0.698, 0.1686, 0.2824
RGB percentages69.8%, 16.9%, 28.2%
HSLhsl(347.1, 61.1%, 43.3%)
HSV / HSBhsv(347.1, 75.8%, 69.8%)
CMYK0%, 75.8%, 59.6%, 30.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,676,488
CSS custom property--colour: #B22B48;
Brightness & contrast
Relative luminance0.11661WCAG 2.x, 0 is black and 1 is white
Perceived brightness105.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.3:1
Contrast with white6.3:1WCAG normal text: AA
Contrast with black3.33:1WCAG normal text: Fail
Greyscale equivalent#4A4A4A
Inverted#4DD4B7
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.3:1WCAG large text: AAA
Contrast with black, large text3.33:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#2BB295
Analogous#B22B8C, #B2512B
Triadic#48B22B, #2B48B2
Split complementary#2BB251, #2B8CB2
Tetradic#8CB22B, #2BB295, #512BB2
Tints, shades & saturation
Channel breakdown
R178
G43
B72
Red178 (69.8%)
Green43 (16.9%)
Blue72 (28.2%)
Hue347.11°
Saturation (HSL)61.09%
Lightness43.33%
Dominant channelRed
Hex per channelR B2 · G 2B · B 48
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Also reads as
B22B48 (chemical formula)
- Formula
- 756.7 g/mol
- 70 atoms
B22B48 has a molar mass of 756.7 g/mol, made up of 70 atoms across 1 element: 70 × B.
Molar mass
Molar mass756.7 g/mol
Total atoms per molecule70
Distinct elements1
Mass of one molecule1.2565299 × 10^-21 g
Molecules per gram7.9584257 × 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
B100%
Boron (B × 70)756.7 g/mol, 100%
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