Recognised as Colour

#CB651B

#CB651B
Orange
Dark
Nearest: Chocolate

#CB651B is a orange with RGB values 203, 101, 27 and HSL 25°, 77%, 45%. It is a dark colour, so black text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Chocolate.

Colour values

#CB651B#CB651B

HEX#CB651B

RGBrgb(203, 101, 27)

RGB (0–1)0.7961, 0.3961, 0.1059

RGB percentages79.6%, 39.6%, 10.6%

HSLhsl(25.2, 76.5%, 45.1%)

HSV / HSBhsv(25.2, 86.7%, 79.6%)

CMYK0%, 50.2%, 86.7%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,329,691

CSS custom property--colour: #CB651B;

Brightness & contrast

Relative luminance0.22083WCAG 2.x, 0 is black and 1 is white

Perceived brightness135.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.42:1

Contrast with white3.88:1WCAG normal text: Fail

Contrast with black5.42:1WCAG normal text: AA

Greyscale equivalent#757575

Inverted#349AE4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#83730Ano red cones; affects about 1% of men; ΔE 40.9 from the original

Deuteranopia#9B8A18no green cones; the most common form, about 1% of men; ΔE 41.7 from the original

Tritanopia#DF4E57no blue cones; rare, and affects men and women equally; ΔE 36.2 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text3.88:1WCAG large text: AA

Contrast with black, large text5.42:1WCAG large text: AAA

Named colours

Chocolate · ΔE 2.2 Coral · ΔE 18.1 Peru · ΔE 18.5 Sienna · ΔE 23.7 Saddle brown · ΔE 24.4 Tomato · ΔE 24.9

Nearest named CSS colourChocolate (#D2691E)ΔE 2.23, below the just-noticeable difference

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1B81CB

Analogous#CB1B29, #CBBD1B

Triadic#1BCB65, #651BCB

Split complementary#1BCBBD, #1B29CB

Tetradic#29CB1B, #1B81CB, #BD1BCB

Tints, shades & saturation

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

Lighter +40%#F6D4BC

Lighter +30%#F0B88F

Lighter +20%#EA9B62

Lighter +10%#E47F35

Darker −10%#9E4F15

Darker −20%#71380F

Darker −30%#442209

Darker −40%#170B03

More saturated +25%#E66100

Less saturated −25%#AE6A38

Channel breakdown

R203

G101

B27

Red203 (79.6%)

Green101 (39.6%)

Blue27 (10.6%)

Hue25.23°

Saturation (HSL)76.52%

Lightness45.1%

Dominant channelRed

Hex per channelR CB · G 65 · B 1B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CB651B (chemical formula)

Formula
7,060.131 g/mol
653 atoms

CB651B has a molar mass of 7,060.131 g/mol, made up of 653 atoms across 2 elements: 1 × C, 652 × B.

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Molar mass

Molar mass7,060.131 g/mol

Total atoms per molecule653

Distinct elements2

Mass of one molecule1.1723623 × 10^-20 g

Molecules per gram8.5297861 × 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

C0.2%

B99.8%

Carbon (C)12.011 g/mol, 0.17%

Boron (B × 652)7,048.12 g/mol, 99.83%

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Elements in this formula

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