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Recognised as Colour

#A42A00

  • #A42A00
  • Orange
  • Dark
  • Nearest: Dark red

#A42A00 is a orange with RGB values 164, 42, 0 and HSL 15°, 100%, 32%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Dark red.

Colour values

#A42A00#A42A00
HEX#A42A00
RGBrgb(164, 42, 0)
RGB (0–1)0.6431, 0.1647, 0
RGB percentages64.3%, 16.5%, 0%
HSLhsl(15.4, 100%, 32.2%)
HSV / HSBhsv(15.4, 100%, 64.3%)
CMYK0%, 74.4%, 100%, 35.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,758,656
CSS custom property--colour: #A42A00;

Brightness & contrast

Relative luminance0.09548WCAG 2.x, 0 is black and 1 is white
Perceived brightness95.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.22:1
Contrast with white7.22:1WCAG normal text: AAA
Contrast with black2.91:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#5BD5FF

Colour vision & accessibility

Protanopia#504600no red cones; affects about 1% of men; ΔE 53.3 from the original
Deuteranopia#6E6100no green cones; the most common form, about 1% of men; ΔE 52.7 from the original
Tritanopia#B50024no blue cones; rare, and affects men and women equally; ΔE 20.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.22:1WCAG large text: AAA
Contrast with black, large text2.91:1WCAG large text: Fail

Named colours

Nearest named CSS colourDark red (#8B0000)ΔE 12.51, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#007AA4
Analogous#A40028, #A47C00
Triadic#00A42A, #2A00A4
Split complementary#00A47C, #0028A4
Tetradic#28A400, #007AA4, #7C00A4

Tints, shades & saturation

Lighter +40%#FF9571
Lighter +30%#FF6F3E
Lighter +20%#FF490B
Lighter +10%#D73700
Darker −10%#711D00
Darker −20%#3E1000
Darker −30%#0B0300
Darker −40%#000000
More saturated +25%#A42A00
Less saturated −25%#903414

Channel breakdown

R164
G42
B0
Red164 (64.3%)
Green42 (16.5%)
Blue0 (0%)
Hue15.37°
Saturation (HSL)100%
Lightness32.16%
Dominant channelRed
Hex per channelR A4 · G 2A · B 00

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Every value on this page was computed from “a42a00” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.