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Colour

#664C00

  • #664C00
  • Orange
  • Dark
  • Nearest: Saddle brown

#664C00 is a orange with RGB values 102, 76, 0 and HSL 45°, 100%, 20%. It is a dark colour, so white text on it reaches 8.1:1 contrast (AAA for normal text). The nearest named colour is Saddle brown.

Colour values

#664C00#664C00
HEX#664C00
RGBrgb(102, 76, 0)
RGB (0–1)0.4, 0.298, 0
RGB percentages40%, 29.8%, 0%
HSLhsl(44.7, 100%, 20%)
HSV / HSBhsv(44.7, 100%, 40%)
CMYK0%, 25.5%, 100%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,704,128
CSS custom property--colour: #664C00;

Brightness & contrast

Relative luminance0.07994WCAG 2.x, 0 is black and 1 is white
Perceived brightness80.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.08:1
Contrast with white8.08:1WCAG normal text: AAA
Contrast with black2.6:1WCAG normal text: Fail
Greyscale equivalent#4C4C4C
Inverted#99B3FF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#574C00no red cones; affects about 1% of men; ΔE 8.1 from the original
Deuteranopia#5E5305no green cones; the most common form, about 1% of men; ΔE 8.3 from the original
Tritanopia#704340no blue cones; rare, and affects men and women equally; ΔE 35.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.08:1WCAG large text: AAA
Contrast with black, large text2.6:1WCAG large text: Fail

Named colours

Saddle brown · ΔE 22.5Dark olivegreen · ΔE 27.4Sienna · ΔE 27.8Olive · ΔE 28.5Dark goldenrod · ΔE 32.7Peru · ΔE 33
Nearest named CSS colourSaddle brown (#8B4513)ΔE 22.46, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#001A66
Analogous#661900, #4D6600
Triadic#00664C, #4C0066
Split complementary#004D66, #190066
Tetradic#006619, #001A66, #66004D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFCB33
Lighter +30%#FFBE00
Lighter +20%#CC9800
Lighter +10%#997200
Darker −10%#332600
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#664C00
Less saturated −25%#59460D

Channel breakdown

R102
G76
B0
Red102 (40%)
Green76 (29.8%)
Blue0 (0%)
Hue44.71°
Saturation (HSL)100%
Lightness20%
Dominant channelRed
Hex per channelR 66 · G 4C · B 00

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Every value on this page was computed from “664c00” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.