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Recognised as Colour

#399D31

  • #399D31
  • Green
  • Dark
  • Nearest: Forest green

#399D31 is a green with RGB values 57, 157, 49 and HSL 116°, 52%, 40%. It is a dark colour, so black text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Forest green.

Colour values

#399D31#399D31
HEX#399D31
RGBrgb(57, 157, 49)
RGB (0–1)0.2235, 0.6157, 0.1922
RGB percentages22.4%, 61.6%, 19.2%
HSLhsl(115.6, 52.4%, 40.4%)
HSV / HSBhsv(115.6, 68.8%, 61.6%)
CMYK63.7%, 0%, 68.8%, 38.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,775,793
CSS custom property--colour: #399D31;

Brightness & contrast

Relative luminance0.25206WCAG 2.x, 0 is black and 1 is white
Perceived brightness125.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.04:1
Contrast with white3.48:1WCAG normal text: Fail
Contrast with black6.04:1WCAG normal text: AA
Greyscale equivalent#808080
Inverted#C662CE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A18F22no red cones; affects about 1% of men; ΔE 46.1 from the original
Deuteranopia#94863Bno green cones; the most common form, about 1% of men; ΔE 45.7 from the original
Tritanopia#279887no blue cones; rare, and affects men and women equally; ΔE 48.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.48:1WCAG large text: AA
Contrast with black, large text6.04:1WCAG large text: AAA

Named colours

Forest green · ΔE 6.8Green · ΔE 11.8Olivedrab · ΔE 22.1Dark green · ΔE 22.5Medium seagreen · ΔE 23.3Limegreen · ΔE 27.7
Nearest named CSS colourForest green (#228B22)ΔE 6.78, clearly different but related
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#95319D
Analogous#6F9D31, #319D5F
Triadic#31399D, #9D3139
Split complementary#5F319D, #9D316F
Tetradic#316F9D, #95319D, #9D5F31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B7E7B3
Lighter +30%#92DB8C
Lighter +20%#6DCF65
Lighter +10%#48C33E
Darker −10%#2B7625
Darker −20%#1D4F19
Darker −30%#0F280D
Darker −40%#010200
More saturated +25%#23B717
Less saturated −25%#4F834B

Channel breakdown

R57
G157
B49
Red57 (22.4%)
Green157 (61.6%)
Blue49 (19.2%)
Hue115.56°
Saturation (HSL)52.43%
Lightness40.39%
Dominant channelGreen
Hex per channelR 39 · G 9D · B 31

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Every value on this page was computed from “399d31” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.