Recognised as Colour

#ACB51B

#ACB51B
Yellow
Dark
Nearest: Yellow green

#ACB51B is a yellow with RGB values 172, 181, 27 and HSL 64°, 74%, 41%. It is a dark colour, so black text on it reaches 9.4:1 contrast (AAA for normal text). The nearest named colour is Yellow green.

Colour values

#ACB51B#ACB51B

HEX#ACB51B

RGBrgb(172, 181, 27)

RGB (0–1)0.6745, 0.7098, 0.1059

RGB percentages67.5%, 71%, 10.6%

HSLhsl(63.5, 74%, 40.8%)

HSV / HSBhsv(63.5, 85.1%, 71%)

CMYK5%, 0%, 85.1%, 29%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,318,555

CSS custom property--colour: #ACB51B;

Brightness & contrast

Relative luminance0.41898WCAG 2.x, 0 is black and 1 is white

Perceived brightness167.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 9.38:1

Contrast with white2.24:1WCAG normal text: Fail

Contrast with black9.38:1WCAG normal text: AAA

Greyscale equivalent#A8A8A8

Inverted#534AE4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#C3AC00no red cones; affects about 1% of men; ΔE 15 from the original

Deuteranopia#C3AF2Cno green cones; the most common form, about 1% of men; ΔE 14.1 from the original

Tritanopia#B8AA9Ano blue cones; rare, and affects men and women equally; ΔE 62.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text2.24:1WCAG large text: Fail

Contrast with black, large text9.38:1WCAG large text: AAA

Named colours

Yellow green · ΔE 18.8 Olive · ΔE 23.3 Olivedrab · ΔE 25.9 Goldenrod · ΔE 28.7 Gold · ΔE 30.8 Dark khaki · ΔE 31.2

Nearest named CSS colourYellow green (#9ACD32)ΔE 18.83, a distinctly different colour

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#241BB5

Analogous#B5711B, #5FB51B

Triadic#1BACB5, #B51BAC

Split complementary#1B5FB5, #711BB5

Tetradic#1BB571, #241BB5, #B51B5F

Tints, shades & saturation

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

Lighter +40%#EEF2AA

Lighter +30%#E5EC7D

Lighter +20%#DCE551

Lighter +10%#D4DE25

Darker −10%#828914

Darker −20%#585C0E

Darker −30%#2D3007

Darker −40%#030301

More saturated +25%#C3CF01

Less saturated −25%#959B35

Channel breakdown

R172

G181

B27

Red172 (67.5%)

Green181 (71%)

Blue27 (10.6%)

Hue63.51°

Saturation (HSL)74.04%

Lightness40.78%

Dominant channelGreen

Hex per channelR AC · G B5 · B 1B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

AcB51B (chemical formula)

Formula
789.12 g/mol
53 atoms

AcB51B has a molar mass of 789.12 g/mol, made up of 53 atoms across 2 elements: 1 × Ac, 52 × B.

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Molar mass

Molar mass789.12 g/mol

Total atoms per molecule53

Distinct elements2

Mass of one molecule1.3103646 × 10^-21 g

Molecules per gram7.6314639 × 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

Ac28.8%

B71.2%

Actinium (Ac)227 g/mol, 28.766%

Boron (B × 52)562.12 g/mol, 71.234%

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Elements in this formula

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