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Recognised as Colour

#21B121

  • #21B121
  • Green
  • Dark
  • Nearest: Limegreen

#21B121 is a green with RGB values 33, 177, 33 and HSL 120°, 69%, 41%. It is a dark colour, so black text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Limegreen.

Colour values

#21B121#21B121
HEX#21B121
RGBrgb(33, 177, 33)
RGB (0–1)0.1294, 0.6941, 0.1294
RGB percentages12.9%, 69.4%, 12.9%
HSLhsl(120, 68.6%, 41.2%)
HSV / HSBhsv(120, 81.4%, 69.4%)
CMYK81.4%, 0%, 81.4%, 30.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,208,033
CSS custom property--colour: #21B121;

Brightness & contrast

Relative luminance0.31877WCAG 2.x, 0 is black and 1 is white
Perceived brightness137.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.38:1
Contrast with white2.85:1WCAG normal text: Fail
Contrast with black7.38:1WCAG normal text: AAA
Greyscale equivalent#888888
Inverted#DE4EDE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B59F00no red cones; affects about 1% of men; ΔE 57.8 from the original
Deuteranopia#A69533no green cones; the most common form, about 1% of men; ΔE 57.1 from the original
Tritanopia#00AC97no blue cones; rare, and affects men and women equally; ΔE 60.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.85:1WCAG large text: Fail
Contrast with black, large text7.38:1WCAG large text: AAA

Named colours

Limegreen · ΔE 11.4Green · ΔE 21.3Forest green · ΔE 21.7Yellow green · ΔE 28.8Spring green · ΔE 31.2Light green · ΔE 34.8
Nearest named CSS colourLimegreen (#32CD32)ΔE 11.37, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B121B1
Analogous#69B121, #21B169
Triadic#2121B1, #B12121
Split complementary#6921B1, #B12169
Tetradic#2169B1, #B121B1, #B16921

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AEF0AE
Lighter +30%#83E883
Lighter +20%#58E058
Lighter +10%#2DD82D
Darker −10%#198619
Darker −20%#115B11
Darker −30%#093009
Darker −40%#010501
More saturated +25%#07CB07
Less saturated −25%#3B973B

Channel breakdown

R33
G177
B33
Red33 (12.9%)
Green177 (69.4%)
Blue33 (12.9%)
Hue120°
Saturation (HSL)68.57%
Lightness41.18%
Dominant channelGreen
Hex per channelR 21 · G B1 · B 21

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Every value on this page was computed from “21b121” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.