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Recognised as Colour

#644B46

  • #644B46
  • Red
  • Dark
  • Nearest: Dim grey

#644B46 is a red with RGB values 100, 75, 70 and HSL 10°, 18%, 33%. It is a dark colour, so white text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Dim grey.

Colour values

#644B46#644B46
HEX#644B46
RGBrgb(100, 75, 70)
RGB (0–1)0.3922, 0.2941, 0.2745
RGB percentages39.2%, 29.4%, 27.5%
HSLhsl(10, 17.6%, 33.3%)
HSV / HSBhsv(10, 30%, 39.2%)
CMYK0%, 25%, 30%, 60.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,572,870
CSS custom property--colour: #644B46;

Brightness & contrast

Relative luminance0.08184WCAG 2.x, 0 is black and 1 is white
Perceived brightness82.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.96:1
Contrast with white7.96:1WCAG normal text: AAA
Contrast with black2.64:1WCAG normal text: Fail
Greyscale equivalent#505050
Inverted#9BB4B9

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#504E46no red cones; affects about 1% of men; ΔE 10.8 from the original
Deuteranopia#565346no green cones; the most common form, about 1% of men; ΔE 11.2 from the original
Tritanopia#6A484Ano 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 text7.96:1WCAG large text: AAA
Contrast with black, large text2.64:1WCAG large text: Fail

Named colours

Dim grey · ΔE 15.7Gray · ΔE 22.7Dark slate grey · ΔE 24.3Slate grey · ΔE 28.2Rosy brown · ΔE 30.1Light slate grey · ΔE 30.7
Nearest named CSS colourDim grey (#696969)ΔE 15.7, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#465F64
Analogous#644650, #645A46
Triadic#46644B, #4B4664
Split complementary#46645A, #465064
Tetradic#506446, #465F64, #5A4664

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C7B3AF
Lighter +30%#B29791
Lighter +20%#9D7A73
Lighter +10%#82625B
Darker −10%#463531
Darker −20%#281E1C
Darker −30%#0A0807
Darker −40%#000000
More saturated +25%#793D31
Less saturated −25%#555555

Channel breakdown

R100
G75
B70
Red100 (39.2%)
Green75 (29.4%)
Blue70 (27.5%)
Hue10°
Saturation (HSL)17.65%
Lightness33.33%
Dominant channelRed
Hex per channelR 64 · G 4B · B 46

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Every value on this page was computed from “644b46” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.