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Recognised as Colour

#217D21

  • #217D21
  • Green
  • Dark
  • Nearest: Forest green

#217D21 is a green with RGB values 33, 125, 33 and HSL 120°, 58%, 31%. It is a dark colour, so white text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Forest green.

Colour values

#217D21#217D21
HEX#217D21
RGBrgb(33, 125, 33)
RGB (0–1)0.1294, 0.4902, 0.1294
RGB percentages12.9%, 49%, 12.9%
HSLhsl(120, 58.2%, 31%)
HSV / HSBhsv(120, 73.6%, 49%)
CMYK73.6%, 0%, 73.6%, 51%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,194,721
CSS custom property--colour: #217D21;

Brightness & contrast

Relative luminance0.151WCAG 2.x, 0 is black and 1 is white
Perceived brightness98.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.22:1
Contrast with white5.22:1WCAG normal text: AA
Contrast with black4.02:1WCAG normal text: Fail
Greyscale equivalent#636363
Inverted#DE82DE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#807112no red cones; affects about 1% of men; ΔE 41.8 from the original
Deuteranopia#756A2Ano green cones; the most common form, about 1% of men; ΔE 41 from the original
Tritanopia#02796Bno blue cones; rare, and affects men and women equally; ΔE 42.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.22:1WCAG large text: AAA
Contrast with black, large text4.02:1WCAG large text: AA

Named colours

Forest green · ΔE 8.1Dark green · ΔE 9.8Green · ΔE 11.6Olivedrab · ΔE 21.1Sea green · ΔE 21.9Medium seagreen · ΔE 25.5
Nearest named CSS colourForest green (#228B22)ΔE 8.06, clearly different but related
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7D217D
Analogous#4F7D21, #217D4F
Triadic#21217D, #7D2121
Split complementary#4F217D, #7D214F
Tetradic#214F7D, #7D217D, #7D4F21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8AE08A
Lighter +30%#62D562
Lighter +20%#39CB39
Lighter +10%#2CA52C
Darker −10%#165516
Darker −20%#0C2C0C
Darker −30%#010401
Darker −40%#000000
More saturated +25%#0D910D
Less saturated −25%#356935

Channel breakdown

R33
G125
B33
Red33 (12.9%)
Green125 (49%)
Blue33 (12.9%)
Hue120°
Saturation (HSL)58.23%
Lightness30.98%
Dominant channelGreen
Hex per channelR 21 · G 7D · B 21

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Every value on this page was computed from “217d21” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.