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Recognised as Colour

#A40D4F

  • #A40D4F
  • Red
  • Dark
  • Nearest: Medium violet red

#A40D4F is a red with RGB values 164, 13, 79 and HSL 334°, 85%, 35%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Medium violet red.

Colour values

#A40D4F#A40D4F
HEX#A40D4F
RGBrgb(164, 13, 79)
RGB (0–1)0.6431, 0.051, 0.3098
RGB percentages64.3%, 5.1%, 31%
HSLhsl(333.8, 85.3%, 34.7%)
HSV / HSBhsv(333.8, 92.1%, 64.3%)
CMYK0%, 92.1%, 51.8%, 35.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,751,311
CSS custom property--colour: #A40D4F;

Brightness & contrast

Relative luminance0.08745WCAG 2.x, 0 is black and 1 is white
Perceived brightness94.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.64:1
Contrast with white7.64:1WCAG normal text: AAA
Contrast with black2.75:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#5BF2B0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3C4150no red cones; affects about 1% of men; ΔE 59.5 from the original
Deuteranopia#625D4Cno green cones; the most common form, about 1% of men; ΔE 60.6 from the original
Tritanopia#B3002Fno blue cones; rare, and affects men and women equally; ΔE 24.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.64:1WCAG large text: AAA
Contrast with black, large text2.75:1WCAG large text: Fail

Named colours

Medium violet red · ΔE 24.7Brown · ΔE 27.9Pale violetred · ΔE 28.7Indian red · ΔE 28.9Crimson · ΔE 33.6Firebrick · ΔE 33.7
Nearest named CSS colourMedium violet red (#C71585)ΔE 24.69, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0DA462
Analogous#A40D9A, #A4170D
Triadic#4FA40D, #0D4FA4
Split complementary#0DA417, #0D9AA4
Tetradic#9BA40D, #0DA462, #170DA4

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F687B8
Lighter +30%#F2589B
Lighter +20%#EE297F
Lighter +10%#D31166
Darker −10%#750938
Darker −20%#450621
Darker −30%#16020B
Darker −40%#000000
More saturated +25%#B1004D
Less saturated −25%#8E2352

Channel breakdown

R164
G13
B79
Red164 (64.3%)
Green13 (5.1%)
Blue79 (31%)
Hue333.77°
Saturation (HSL)85.31%
Lightness34.71%
Dominant channelRed
Hex per channelR A4 · G 0D · B 4F

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Every value on this page was computed from “a40d4f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.