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Recognised as Colour

#A6404F

  • #A6404F
  • Red
  • Dark
  • Nearest: Indian red

#A6404F is a red with RGB values 166, 64, 79 and HSL 351°, 44%, 45%. It is a dark colour, so white text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Indian red.

Colour values

#A6404F#A6404F
HEX#A6404F
RGBrgb(166, 64, 79)
RGB (0–1)0.651, 0.251, 0.3098
RGB percentages65.1%, 25.1%, 31%
HSLhsl(351.2, 44.3%, 45.1%)
HSV / HSBhsv(351.2, 61.4%, 65.1%)
CMYK0%, 61.4%, 52.4%, 34.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,895,439
CSS custom property--colour: #A6404F;

Brightness & contrast

Relative luminance0.12338WCAG 2.x, 0 is black and 1 is white
Perceived brightness106.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.06:1
Contrast with white6.06:1WCAG normal text: AA
Contrast with black3.47:1WCAG normal text: Fail
Greyscale equivalent#575757
Inverted#59BFB0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#57554Fno red cones; affects about 1% of men; ΔE 45 from the original
Deuteranopia#716A4Dno green cones; the most common form, about 1% of men; ΔE 45.8 from the original
Tritanopia#B53046no blue cones; rare, and affects men and women equally; ΔE 12.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.06:1WCAG large text: AAA
Contrast with black, large text3.47:1WCAG large text: AA

Named colours

Indian red · ΔE 14.8Brown · ΔE 19Pale violetred · ΔE 22.9Light coral · ΔE 25.2Sienna · ΔE 26.5Firebrick · ΔE 27.7
Nearest named CSS colourIndian red (#CD5C5C)ΔE 14.76, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#40A697
Analogous#A64082, #A66440
Triadic#4FA640, #404FA6
Split complementary#40A664, #4082A6
Tetradic#82A640, #40A697, #6440A6

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EAC8CD
Lighter +30%#DCA3AC
Lighter +20%#CD7F8A
Lighter +10%#BF5A69
Darker −10%#81323D
Darker −20%#5C242C
Darker −30%#38151A
Darker −40%#130709
More saturated +25%#C3233B
Less saturated −25%#895D63

Channel breakdown

R166
G64
B79
Red166 (65.1%)
Green64 (25.1%)
Blue79 (31%)
Hue351.18°
Saturation (HSL)44.35%
Lightness45.1%
Dominant channelRed
Hex per channelR A6 · G 40 · B 4F

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Every value on this page was computed from “a6404f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.