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Recognised as Colour

#57CF21

  • #57CF21
  • Green
  • Dark
  • Nearest: Limegreen

#57CF21 is a green with RGB values 87, 207, 33 and HSL 101°, 73%, 47%. It is a dark colour, so black text on it reaches 10.4:1 contrast (AAA for normal text). The nearest named colour is Limegreen.

Colour values

#57CF21#57CF21
HEX#57CF21
RGBrgb(87, 207, 33)
RGB (0–1)0.3412, 0.8118, 0.1294
RGB percentages34.1%, 81.2%, 12.9%
HSLhsl(101.4, 72.5%, 47.1%)
HSV / HSBhsv(101.4, 84.1%, 81.2%)
CMYK58%, 0%, 84.1%, 18.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,754,657
CSS custom property--colour: #57CF21;

Brightness & contrast

Relative luminance0.46762WCAG 2.x, 0 is black and 1 is white
Perceived brightness166 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.35:1
Contrast with white2.03:1WCAG normal text: Fail
Contrast with black10.35:1WCAG normal text: AAA
Greyscale equivalent#A9A9A9
Inverted#A830DE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D5BC00no red cones; affects about 1% of men; ΔE 56 from the original
Deuteranopia#C7B239no green cones; the most common form, about 1% of men; ΔE 56 from the original
Tritanopia#4AC8B0no blue cones; rare, and affects men and women equally; ΔE 69.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.03:1WCAG large text: Fail
Contrast with black, large text10.35:1WCAG large text: AAA

Named colours

Limegreen · ΔE 8.8Lawn green · ΔE 23.5Yellow green · ΔE 23.6Green yellow · ΔE 24.4Chartreuse · ΔE 24.8Spring green · ΔE 29.7
Nearest named CSS colourLimegreen (#32CD32)ΔE 8.77, clearly different but related
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9921CF
Analogous#AECF21, #21CF42
Triadic#2157CF, #CF2157
Split complementary#4221CF, #CF21AE
Tetradic#21AECF, #9921CF, #CF4221

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D5F6C6
Lighter +30%#B4EF9A
Lighter +20%#94E86E
Lighter +10%#73E142
Darker −10%#45A31A
Darker −20%#327713
Darker −30%#204B0C
Darker −40%#0D1F05
More saturated +25%#4CED03
Less saturated −25%#62B13F

Channel breakdown

R87
G207
B33
Red87 (34.1%)
Green207 (81.2%)
Blue33 (12.9%)
Hue101.38°
Saturation (HSL)72.5%
Lightness47.06%
Dominant channelGreen
Hex per channelR 57 · G CF · B 21

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Every value on this page was computed from “57cf21” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.