Recognised as Colour

#B1807C

#B1807C
Red
Dark
Nearest: Rosy brown

#B1807C is a red with RGB values 177, 128, 124 and HSL 5°, 25%, 59%. It is a dark colour, so black text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Rosy brown.

Colour values

#B1807C#B1807C

HEX#B1807C

RGBrgb(177, 128, 124)

RGB (0–1)0.6941, 0.502, 0.4863

RGB percentages69.4%, 50.2%, 48.6%

HSLhsl(4.5, 25.4%, 59%)

HSV / HSBhsv(4.5, 29.9%, 69.4%)

CMYK0%, 27.7%, 29.9%, 30.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,632,764

CSS custom property--colour: #B1807C;

Brightness & contrast

Relative luminance0.26241WCAG 2.x, 0 is black and 1 is white

Perceived brightness144 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.25:1

Contrast with white3.36:1WCAG normal text: Fail

Contrast with black6.25:1WCAG normal text: AA

Greyscale equivalent#8A8A8A

Inverted#4E7F83

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#8A867Cno red cones; affects about 1% of men; ΔE 19.3 from the original

Deuteranopia#95907Bno green cones; the most common form, about 1% of men; ΔE 20.4 from the original

Tritanopia#BB7A7Fno blue cones; rare, and affects men and women equally; ΔE 7.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.36:1WCAG large text: AA

Contrast with black, large text6.25:1WCAG large text: AAA

Named colours

Rosy brown · ΔE 6.3 Gray · ΔE 21.3 Dark grey · ΔE 23.5 Dark salmon · ΔE 23.6 Dim grey · ΔE 25 Light pink · ΔE 25.2

Nearest named CSS colourRosy brown (#BC8F8F)ΔE 6.3, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#7CADB1

Analogous#B17C93, #B19B7C

Triadic#7CB180, #807CB1

Split complementary#7CB19A, #7C93B1

Tetradic#93B17C, #7CADB1, #9A7CB1

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FDFCFC

Lighter +30%#EADDDC

Lighter +20%#D7BEBC

Lighter +10%#C49F9C

Darker −10%#9D625D

Darker −20%#7D4E4A

Darker −30%#5D3A37

Darker −40%#3D2624

More saturated +25%#CB6A62

Less saturated −25%#979696

Channel breakdown

R177

G128

B124

Red177 (69.4%)

Green128 (50.2%)

Blue124 (48.6%)

Hue4.53°

Saturation (HSL)25.36%

Lightness59.02%

Dominant channelRed

Hex per channelR B1 · G 80 · B 7C

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B1807C (chemical formula)

Formula
19,545.681 g/mol
1808 atoms

B1807C has a molar mass of 19,545.681 g/mol, made up of 1808 atoms across 2 elements: 1807 × B, 1 × C.

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Molar mass

Molar mass19,545.681 g/mol

Total atoms per molecule1808

Distinct elements2

Mass of one molecule3.2456367 × 10^-20 g

Molecules per gram3.0810596 × 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

B99.9%

C0.1%

Boron (B × 1807)19,533.67 g/mol, 99.939%

Carbon (C)12.011 g/mol, 0.061%

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Elements in this formula

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