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Recognised as Colour

#583D42

  • #583D42
  • Red
  • Dark
  • Nearest: Dim grey

#583D42 is a red with RGB values 88, 61, 66 and HSL 349°, 18%, 29%. It is a dark colour, so white text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Dim grey.

Colour values

#583D42#583D42
HEX#583D42
RGBrgb(88, 61, 66)
RGB (0–1)0.3451, 0.2392, 0.2588
RGB percentages34.5%, 23.9%, 25.9%
HSLhsl(348.9, 18.1%, 29.2%)
HSV / HSBhsv(348.9, 30.7%, 34.5%)
CMYK0%, 30.7%, 25%, 65.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,782,850
CSS custom property--colour: #583D42;

Brightness & contrast

Relative luminance0.05806WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.72:1
Contrast with white9.72:1WCAG normal text: AAA
Contrast with black2.16:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#A7C2BD

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#414142no red cones; affects about 1% of men; ΔE 12.7 from the original
Deuteranopia#474641no green cones; the most common form, about 1% of men; ΔE 13.4 from the original
Tritanopia#5D3B3Fno blue cones; rare, and affects men and women equally; ΔE 3.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.72:1WCAG large text: AAA
Contrast with black, large text2.16:1WCAG large text: Fail

Named colours

Dim grey · ΔE 20.1Dark slate grey · ΔE 25.1Gray · ΔE 27.8Slate grey · ΔE 30.7Black · ΔE 31.6Light slate grey · ΔE 33.4
Nearest named CSS colourDim grey (#696969)ΔE 20.1, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3D5853
Analogous#583D50, #58463D
Triadic#42583D, #3D4258
Split complementary#3D5846, #3D5058
Tetradic#50583D, #3D5853, #463D58

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BFA2A8
Lighter +30%#AA848B
Lighter +20%#94676F
Lighter +10%#765259
Darker −10%#3A282B
Darker −20%#1C1315
Darker −30%#000000
Darker −40%#000000
More saturated +25%#6B2A36
Less saturated −25%#4B4B4B

Channel breakdown

R88
G61
B66
Red88 (34.5%)
Green61 (23.9%)
Blue66 (25.9%)
Hue348.89°
Saturation (HSL)18.12%
Lightness29.22%
Dominant channelRed
Hex per channelR 58 · G 3D · B 42

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Every value on this page was computed from “583d42” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.