Recognised as Colour
#B17C78
- #B17C78
- Red
- Dark
- Nearest: Rosy brown
#B17C78 is a red with RGB values 177, 124, 120 and HSL 4°, 27%, 58%. It is a dark colour, so black text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Rosy brown.
Colour values
#B17C78#B17C78
HEX#B17C78
RGBrgb(177, 124, 120)
RGB (0–1)0.6941, 0.4863, 0.4706
RGB percentages69.4%, 48.6%, 47.1%
HSLhsl(4.2, 26.8%, 58.2%)
HSV / HSBhsv(4.2, 32.2%, 69.4%)
CMYK0%, 29.9%, 32.2%, 30.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,631,736
CSS custom property--colour: #B17C78;
Brightness & contrast
Relative luminance0.25118WCAG 2.x, 0 is black and 1 is white
Perceived brightness141.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.02:1
Contrast with white3.49:1WCAG normal text: Fail
Contrast with black6.02:1WCAG normal text: AA
Greyscale equivalent#878787
Inverted#4E8387
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.49:1WCAG large text: AA
Contrast with black, large text6.02:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#78ADB1
Analogous#B17890, #B19978
Triadic#78B17C, #7C78B1
Split complementary#78B199, #7890B1
Tetradic#91B178, #78ADB1, #9978B1
Tints, shades & saturation
Channel breakdown
R177
G124
B120
Red177 (69.4%)
Green124 (48.6%)
Blue120 (47.1%)
Hue4.21°
Saturation (HSL)26.76%
Lightness58.24%
Dominant channelRed
Hex per channelR B1 · G 7C · B 78
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Harmonies
Similar named colours
Also reads as
B17C78 (chemical formula)
- Formula
- 1,120.628 g/mol
- 95 atoms
B17C78 has a molar mass of 1,120.628 g/mol, made up of 95 atoms across 2 elements: 17 × B, 78 × C.
Molar mass
Molar mass1,120.628 g/mol
Total atoms per molecule95
Distinct elements2
Mass of one molecule1.8608466 × 10^-21 g
Molecules per gram5.3738982 × 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
B16.4%
C83.6%
Boron (B × 17)183.77 g/mol, 16.399%
Carbon (C × 78)936.858 g/mol, 83.601%
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