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Colour

#665B15

  • #665B15
  • Yellow
  • Dark
  • Nearest: Dark olivegreen

#665B15 is a yellow with RGB values 102, 91, 21 and HSL 52°, 66%, 24%. It is a dark colour, so white text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Dark olivegreen.

Colour values

#665B15#665B15
HEX#665B15
RGBrgb(102, 91, 21)
RGB (0–1)0.4, 0.3569, 0.0824
RGB percentages40%, 35.7%, 8.2%
HSLhsl(51.9, 65.9%, 24.1%)
HSV / HSBhsv(51.9, 79.4%, 40%)
CMYK0%, 10.8%, 79.4%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,707,989
CSS custom property--colour: #665B15;

Brightness & contrast

Relative luminance0.10361WCAG 2.x, 0 is black and 1 is white
Perceived brightness89.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.84:1
Contrast with white6.84:1WCAG normal text: AA
Contrast with black3.07:1WCAG normal text: Fail
Greyscale equivalent#585858
Inverted#99A4EA

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#655808no red cones; affects about 1% of men; ΔE 3.6 from the original
Deuteranopia#685C1Ano green cones; the most common form, about 1% of men; ΔE 1.7 from the original
Tritanopia#6F544Eno blue cones; rare, and affects men and women equally; ΔE 34.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.84:1WCAG large text: AAA
Contrast with black, large text3.07:1WCAG large text: AA

Named colours

Dark olivegreen · ΔE 17.6Olive · ΔE 23.7Saddle brown · ΔE 30.5Olivedrab · ΔE 30.9Sienna · ΔE 33.9Dark goldenrod · ΔE 34.2
Nearest named CSS colourDark olivegreen (#556B2F)ΔE 17.63, a distinctly different colour
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#152066
Analogous#663215, #496615
Triadic#15665B, #5B1566
Split complementary#154966, #331566
Tetradic#156632, #152066, #661548

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E0CF67
Lighter +30%#D7C23D
Lighter +20%#BBA626
Lighter +10%#90811E
Darker −10%#3C350C
Darker −20%#111004
Darker −30%#000000
Darker −40%#000000
More saturated +25%#756606
Less saturated −25%#575024

Channel breakdown

R102
G91
B21
Red102 (40%)
Green91 (35.7%)
Blue21 (8.2%)
Hue51.85°
Saturation (HSL)65.85%
Lightness24.12%
Dominant channelRed
Hex per channelR 66 · G 5B · B 15

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Every value on this page was computed from “665b15” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.