Recognised as Colour
#B57B20
- #B57B20
- Orange
- Dark
- Nearest: Dark goldenrod
#B57B20 is a orange with RGB values 181, 123, 32 and HSL 37°, 70%, 42%. It is a dark colour, so black text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Dark goldenrod.
Colour values
#B57B20#B57B20
HEX#B57B20
RGBrgb(181, 123, 32)
RGB (0–1)0.7098, 0.4824, 0.1255
RGB percentages71%, 48.2%, 12.5%
HSLhsl(36.6, 70%, 41.8%)
HSV / HSBhsv(36.6, 82.3%, 71%)
CMYK0%, 32%, 82.3%, 29%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,893,536
CSS custom property--colour: #B57B20;
Brightness & contrast
Relative luminance0.24094WCAG 2.x, 0 is black and 1 is white
Perceived brightness137.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.82:1
Contrast with white3.61:1WCAG normal text: Fail
Contrast with black5.82:1WCAG normal text: AA
Greyscale equivalent#818181
Inverted#4A84DF
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.61:1WCAG large text: AA
Contrast with black, large text5.82:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#205AB5
Analogous#B53020, #A4B520
Triadic#20B57B, #7B20B5
Split complementary#20A4B5, #3120B5
Tetradic#20B531, #205AB5, #B520A4
Tints, shades & saturation
Channel breakdown
R181
G123
B32
Red181 (71%)
Green123 (48.2%)
Blue32 (12.5%)
Hue36.64°
Saturation (HSL)69.95%
Lightness41.76%
Dominant channelRed
Hex per channelR B5 · G 7B · B 20
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Harmonies
Similar named colours
Also reads as
B57B20 (chemical formula)
- Formula
- 832.37 g/mol
- 77 atoms
B57B20 has a molar mass of 832.37 g/mol, made up of 77 atoms across 1 element: 77 × B.
Molar mass
Molar mass832.37 g/mol
Total atoms per molecule77
Distinct elements1
Mass of one molecule1.3821829 × 10^-21 g
Molecules per gram7.2349325 × 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 × 77)832.37 g/mol, 100%
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Elements in this formula
Nerdulate something else
Nothing in mind? Surprise me · today’s page