Recognised as Colour
#B1070B
- #B1070B
- Red
- Dark
- Nearest: Firebrick
#B1070B is a red with RGB values 177, 7, 11 and HSL 359°, 92%, 36%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Firebrick.
Colour values
#B1070B#B1070B
HEX#B1070B
RGBrgb(177, 7, 11)
RGB (0–1)0.6941, 0.0275, 0.0431
RGB percentages69.4%, 2.7%, 4.3%
HSLhsl(358.6, 92.4%, 36.1%)
HSV / HSBhsv(358.6, 96%, 69.4%)
CMYK0%, 96%, 93.8%, 30.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,601,675
CSS custom property--colour: #B1070B;
Brightness & contrast
Relative luminance0.09523WCAG 2.x, 0 is black and 1 is white
Perceived brightness97 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.23:1
Contrast with white7.23:1WCAG normal text: AAA
Contrast with black2.9:1WCAG normal text: Fail
Greyscale equivalent#2B2B2B
Inverted#4EF8F4
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.23:1WCAG large text: AAA
Contrast with black, large text2.9:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#07B1AD
Analogous#B10760, #B15807
Triadic#0BB107, #070BB1
Split complementary#07B158, #0760B1
Tetradic#60B107, #07B1AD, #5807B1
Tints, shades & saturation
Channel breakdown
R177
G7
B11
Red177 (69.4%)
Green7 (2.7%)
Blue11 (4.3%)
Hue358.59°
Saturation (HSL)92.39%
Lightness36.08%
Dominant channelRed
Hex per channelR B1 · G 07 · B 0B
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Also reads as
B1070B (chemical formula)
- Formula
- 11,577.51 g/mol
- 1071 atoms
B1070B has a molar mass of 11,577.51 g/mol, made up of 1071 atoms across 1 element: 1071 × B.
Molar mass
Molar mass11,577.51 g/mol
Total atoms per molecule1071
Distinct elements1
Mass of one molecule1.9224908 × 10^-20 g
Molecules per gram5.2015855 × 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
B100%
Boron (B × 1071)11,577.51 g/mol, 100%
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