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Recognised as Colour

#57BC21

  • #57BC21
  • Green
  • Dark
  • Nearest: Limegreen

#57BC21 is a green with RGB values 87, 188, 33 and HSL 99°, 70%, 43%. It is a dark colour, so black text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Limegreen.

Colour values

#57BC21#57BC21
HEX#57BC21
RGBrgb(87, 188, 33)
RGB (0–1)0.3412, 0.7373, 0.1294
RGB percentages34.1%, 73.7%, 12.9%
HSLhsl(99.1, 70.1%, 43.3%)
HSV / HSBhsv(99.1, 82.4%, 73.7%)
CMYK53.7%, 0%, 82.4%, 26.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,749,793
CSS custom property--colour: #57BC21;

Brightness & contrast

Relative luminance0.38102WCAG 2.x, 0 is black and 1 is white
Perceived brightness152.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.62:1
Contrast with white2.44:1WCAG normal text: Fail
Contrast with black8.62:1WCAG normal text: AAA
Greyscale equivalent#9B9B9B
Inverted#A843DE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#C2AB00no red cones; affects about 1% of men; ΔE 49.9 from the original
Deuteranopia#B5A335no green cones; the most common form, about 1% of men; ΔE 49.1 from the original
Tritanopia#4FB5A0no blue cones; rare, and affects men and women equally; ΔE 63.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.44:1WCAG large text: Fail
Contrast with black, large text8.62:1WCAG large text: AAA

Named colours

Limegreen · ΔE 13.3Yellow green · ΔE 19.1Forest green · ΔE 25.3Green · ΔE 25.4Green yellow · ΔE 30.8Olivedrab · ΔE 32.3
Nearest named CSS colourLimegreen (#32CD32)ΔE 13.35, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8621BC
Analogous#A4BC21, #21BC39
Triadic#2157BC, #BC2157
Split complementary#3921BC, #BC21A4
Tetradic#21A4BC, #8621BC, #BC3921

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CBF2B7
Lighter +30%#ADEB8B
Lighter +20%#8EE360
Lighter +10%#6FDB35
Darker −10%#439119
Darker −20%#2F6512
Darker −30%#1B3A0A
Darker −40%#070E03
More saturated +25%#4FD805
Less saturated −25%#5FA03D

Channel breakdown

R87
G188
B33
Red87 (34.1%)
Green188 (73.7%)
Blue33 (12.9%)
Hue99.1°
Saturation (HSL)70.14%
Lightness43.33%
Dominant channelGreen
Hex per channelR 57 · G BC · B 21

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Every value on this page was computed from “57bc21” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.