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Recognised as Colour

#40211F

  • #40211F
  • Red
  • Dark
  • Nearest: Black

#40211F is a red with RGB values 64, 33, 31 and HSL 4°, 35%, 19%. It is a dark colour, so white text on it reaches 14.4:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#40211F#40211F
HEX#40211F
RGBrgb(64, 33, 31)
RGB (0–1)0.251, 0.1294, 0.1216
RGB percentages25.1%, 12.9%, 12.2%
HSLhsl(3.6, 34.7%, 18.6%)
HSV / HSBhsv(3.6, 51.6%, 25.1%)
CMYK0%, 48.4%, 51.6%, 74.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,202,783
CSS custom property--colour: #40211F;

Brightness & contrast

Relative luminance0.02277WCAG 2.x, 0 is black and 1 is white
Perceived brightness44.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.43:1
Contrast with white14.43:1WCAG normal text: AAA
Contrast with black1.46:1WCAG normal text: Fail
Greyscale equivalent#272727
Inverted#BFDEE0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#28261Fno red cones; affects about 1% of men; ΔE 15.6 from the original
Deuteranopia#2F2C1Eno green cones; the most common form, about 1% of men; ΔE 16.2 from the original
Tritanopia#461D21no blue cones; rare, and affects men and women equally; ΔE 5.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.43:1WCAG large text: AAA
Contrast with black, large text1.46:1WCAG large text: Fail

Named colours

Black · ΔE 23.7Dim grey · ΔE 32.2Dark slate grey · ΔE 32.2Gray · ΔE 40.3Saddle brown · ΔE 40.7Sienna · ΔE 41.4
Nearest named CSS colourBlack (#000000)ΔE 23.68, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1F3E40
Analogous#401F2E, #40311F
Triadic#1F4021, #211F40
Split complementary#1F4031, #1F2E40
Tetradic#2E401F, #1F3E40, #311F40

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BA7571
Lighter +30%#A75651
Lighter +20%#854440
Lighter +10%#623330
Darker −10%#1E0F0E
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#4C1713
Less saturated −25%#342B2B

Channel breakdown

R64
G33
B31
Red64 (25.1%)
Green33 (12.9%)
Blue31 (12.2%)
Hue3.64°
Saturation (HSL)34.74%
Lightness18.63%
Dominant channelRed
Hex per channelR 40 · G 21 · B 1F

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Every value on this page was computed from “40211f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.