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Recognised as Colour

#66454E

  • #66454E
  • Red
  • Dark
  • Nearest: Dim grey

#66454E is a red with RGB values 102, 69, 78 and HSL 344°, 19%, 34%. It is a dark colour, so white text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Dim grey.

Colour values

#66454E#66454E
HEX#66454E
RGBrgb(102, 69, 78)
RGB (0–1)0.4, 0.2706, 0.3059
RGB percentages40%, 27.1%, 30.6%
HSLhsl(343.6, 19.3%, 33.5%)
HSV / HSBhsv(343.6, 32.4%, 40%)
CMYK0%, 32.4%, 23.5%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,702,414
CSS custom property--colour: #66454E;

Brightness & contrast

Relative luminance0.07631WCAG 2.x, 0 is black and 1 is white
Perceived brightness81.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.31:1
Contrast with white8.31:1WCAG normal text: AAA
Contrast with black2.53:1WCAG normal text: Fail
Greyscale equivalent#4D4D4D
Inverted#99BAB1

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#494B4Eno red cones; affects about 1% of men; ΔE 16.1 from the original
Deuteranopia#51504Dno green cones; the most common form, about 1% of men; ΔE 16 from the original
Tritanopia#6C4348no blue cones; rare, and affects men and women equally; ΔE 4.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.31:1WCAG large text: AAA
Contrast with black, large text2.53:1WCAG large text: Fail

Named colours

Dim grey · ΔE 19.3Gray · ΔE 25.7Dark slate grey · ΔE 27.8Slate grey · ΔE 28.7Rosy brown · ΔE 31.1Light slate grey · ΔE 31.1
Nearest named CSS colourDim grey (#696969)ΔE 19.27, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#45665D
Analogous#66455F, #664D45
Triadic#4E6645, #454E66
Split complementary#45664D, #455F66
Tetradic#5F6645, #45665D, #4D4566

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C9AEB6
Lighter +30%#B4909A
Lighter +20%#9F727E
Lighter +10%#845A65
Darker −10%#483037
Darker −20%#291C1F
Darker −30%#0B0708
Darker −40%#000000
More saturated +25%#7B3044
Less saturated −25%#565656

Channel breakdown

R102
G69
B78
Red102 (40%)
Green69 (27.1%)
Blue78 (30.6%)
Hue343.64°
Saturation (HSL)19.3%
Lightness33.53%
Dominant channelRed
Hex per channelR 66 · G 45 · B 4E

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Every value on this page was computed from “66454e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.