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Colour

#645B53

  • #645B53
  • Orange
  • Dark
  • Nearest: Dim grey

#645B53 is a orange with RGB values 100, 91, 83 and HSL 28°, 9%, 36%. It is a dark colour, so white text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Dim grey.

Colour values

#645B53#645B53
HEX#645B53
RGBrgb(100, 91, 83)
RGB (0–1)0.3922, 0.3569, 0.3255
RGB percentages39.2%, 35.7%, 32.5%
HSLhsl(28.2, 9.3%, 35.9%)
HSV / HSBhsv(28.2, 17%, 39.2%)
CMYK0%, 9%, 17%, 60.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,576,979
CSS custom property--colour: #645B53;

Brightness & contrast

Relative luminance0.10816WCAG 2.x, 0 is black and 1 is white
Perceived brightness92.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.64:1
Contrast with white6.64:1WCAG normal text: AA
Contrast with black3.16:1WCAG normal text: Fail
Greyscale equivalent#5C5C5C
Inverted#9BA4AC

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5E5B53no red cones; affects about 1% of men; ΔE 2.7 from the original
Deuteranopia#605D53no green cones; the most common form, about 1% of men; ΔE 2.9 from the original
Tritanopia#675959no blue cones; rare, and affects men and women equally; ΔE 5.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.64:1WCAG large text: AAA
Contrast with black, large text3.16:1WCAG large text: AA

Named colours

Dim grey · ΔE 8.1Gray · ΔE 15.6Dark slate grey · ΔE 18.7Slate grey · ΔE 21.8Light slate grey · ΔE 24.2Rosy brown · ΔE 28.5
Nearest named CSS colourDim grey (#696969)ΔE 8.13, clearly different but related
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#535C64
Analogous#645354, #646453
Triadic#53645B, #5B5364
Split complementary#536464, #535464
Tetradic#546453, #535C64, #645364

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C7C1BC
Lighter +30%#B0A8A0
Lighter +20%#998E84
Lighter +10%#80746A
Darker −10%#48423C
Darker −20%#2C2825
Darker −30%#100F0E
Darker −40%#000000
More saturated +25%#7B5A3C
Less saturated −25%#5C5C5C

Channel breakdown

R100
G91
B83
Red100 (39.2%)
Green91 (35.7%)
Blue83 (32.5%)
Hue28.24°
Saturation (HSL)9.29%
Lightness35.88%
Dominant channelRed
Hex per channelR 64 · G 5B · B 53

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Every value on this page was computed from “645b53” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.