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Recognised as Colour

#664F27

  • #664F27
  • Orange
  • Dark
  • Nearest: Dark olivegreen

#664F27 is a orange with RGB values 102, 79, 39 and HSL 38°, 45%, 28%. It is a dark colour, so white text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Dark olivegreen.

Colour values

#664F27#664F27
HEX#664F27
RGBrgb(102, 79, 39)
RGB (0–1)0.4, 0.3098, 0.1529
RGB percentages40%, 31%, 15.3%
HSLhsl(38.1, 44.7%, 27.6%)
HSV / HSBhsv(38.1, 61.8%, 40%)
CMYK0%, 22.5%, 61.8%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,704,935
CSS custom property--colour: #664F27;

Brightness & contrast

Relative luminance0.08563WCAG 2.x, 0 is black and 1 is white
Perceived brightness83.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.74:1
Contrast with white7.74:1WCAG normal text: AAA
Contrast with black2.71:1WCAG normal text: Fail
Greyscale equivalent#515151
Inverted#99B0D8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#584F23no red cones; affects about 1% of men; ΔE 7.3 from the original
Deuteranopia#5E5528no green cones; the most common form, about 1% of men; ΔE 7.5 from the original
Tritanopia#6E4846no blue cones; rare, and affects men and women equally; ΔE 22.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.74:1WCAG large text: AAA
Contrast with black, large text2.71:1WCAG large text: Fail

Named colours

Dark olivegreen · ΔE 24.6Saddle brown · ΔE 26.2Sienna · ΔE 27.7Dim grey · ΔE 28.9Gray · ΔE 33Dark slate grey · ΔE 34.9
Nearest named CSS colourDark olivegreen (#556B2F)ΔE 24.6, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#273E66
Analogous#662F27, #5E6627
Triadic#27664F, #4F2766
Split complementary#275E66, #2F2766
Tetradic#27662F, #273E66, #66275E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D1B688
Lighter +30%#C3A063
Lighter +20%#B08843
Lighter +10%#8B6C35
Darker −10%#413219
Darker −20%#1C160B
Darker −30%#000000
Darker −40%#000000
More saturated +25%#785415
Less saturated −25%#544A39

Channel breakdown

R102
G79
B39
Red102 (40%)
Green79 (31%)
Blue39 (15.3%)
Hue38.1°
Saturation (HSL)44.68%
Lightness27.65%
Dominant channelRed
Hex per channelR 66 · G 4F · B 27

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Every value on this page was computed from “664f27” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.