Recognised as Colour
#AC531C
- #AC531C
- Orange
- Dark
- Nearest: Sienna
#AC531C is a orange with RGB values 172, 83, 28 and HSL 23°, 72%, 39%. It is a dark colour, so white text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Sienna.
Colour values
#AC531C#AC531C
HEX#AC531C
RGBrgb(172, 83, 28)
RGB (0–1)0.6745, 0.3255, 0.1098
RGB percentages67.5%, 32.5%, 11%
HSLhsl(22.9, 72%, 39.2%)
HSV / HSBhsv(22.9, 83.7%, 67.5%)
CMYK0%, 51.7%, 83.7%, 32.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,293,468
CSS custom property--colour: #AC531C;
Brightness & contrast
Relative luminance0.15041WCAG 2.x, 0 is black and 1 is white
Perceived brightness113.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.24:1
Contrast with white5.24:1WCAG normal text: AA
Contrast with black4.01:1WCAG normal text: Fail
Greyscale equivalent#626262
Inverted#53ACE3
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.24:1WCAG large text: AAA
Contrast with black, large text4.01:1WCAG large text: AA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#1C75AC
Analogous#AC1C2D, #AC9B1C
Triadic#1CAC53, #531CAC
Split complementary#1CAC9B, #1C2DAC
Tetradic#2DAC1C, #1C75AC, #9B1CAC
Tints, shades & saturation
Channel breakdown
R172
G83
B28
Red172 (67.5%)
Green83 (32.5%)
Blue28 (11%)
Hue22.92°
Saturation (HSL)72%
Lightness39.22%
Dominant channelRed
Hex per channelR AC · G 53 · B 1C
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Also reads as
Ac531C (chemical formula)
- Formula
- 120,549.011 g/mol
- 532 atoms
Ac531C has a molar mass of 120,549.011 g/mol, made up of 532 atoms across 2 elements: 531 × Ac, 1 × C.
Molar mass
Molar mass120,549.011 g/mol
Total atoms per molecule532
Distinct elements2
Mass of one molecule2.0017634 × 10^-19 g
Molecules per gram4.9955953 × 10^18
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
Ac100%
C0%
Actinium (Ac × 531)120,537 g/mol, 99.99%
Carbon (C)12.011 g/mol, 0.01%
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Nerdulate something else
Nothing in mind? Surprise me · today’s page