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Recognised as Colour

#51BB01

  • #51BB01
  • Green
  • Dark
  • Nearest: Limegreen

#51BB01 is a green with RGB values 81, 187, 1 and HSL 94°, 99%, 37%. It is a dark colour, so black text on it reaches 8.5:1 contrast (AAA for normal text). The nearest named colour is Limegreen.

Colour values

#51BB01#51BB01
HEX#51BB01
RGBrgb(81, 187, 1)
RGB (0–1)0.3176, 0.7333, 0.0039
RGB percentages31.8%, 73.3%, 0.4%
HSLhsl(94.2, 98.9%, 36.9%)
HSV / HSBhsv(94.2, 99.5%, 73.3%)
CMYK56.7%, 0%, 99.5%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,356,289
CSS custom property--colour: #51BB01;

Brightness & contrast

Relative luminance0.37292WCAG 2.x, 0 is black and 1 is white
Perceived brightness150 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.46:1
Contrast with white2.48:1WCAG normal text: Fail
Contrast with black8.46:1WCAG normal text: AAA
Greyscale equivalent#979797
Inverted#AE44FE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#C1AA00no red cones; affects about 1% of men; ΔE 51.4 from the original
Deuteranopia#B4A127no green cones; the most common form, about 1% of men; ΔE 51.3 from the original
Tritanopia#48B49Eno blue cones; rare, and affects men and women equally; ΔE 68.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.48:1WCAG large text: Fail
Contrast with black, large text8.46:1WCAG large text: AAA

Named colours

Limegreen · ΔE 13Yellow green · ΔE 20.9Green · ΔE 28Green yellow · ΔE 28.8Forest green · ΔE 29Lawn green · ΔE 29.8
Nearest named CSS colourLimegreen (#32CD32)ΔE 12.96, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6B01BB
Analogous#AEBB01, #01BB0E
Triadic#0151BB, #BB0151
Split complementary#0E01BB, #BB01AE
Tetradic#01AEBB, #6B01BB, #BB0E01

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BCFE8A
Lighter +30%#9FFE57
Lighter +20%#82FE24
Lighter +10%#67EE01
Darker −10%#3B8801
Darker −20%#255600
Darker −30%#0F2300
Darker −40%#000000
More saturated +25%#51BC00
Less saturated −25%#54A318

Channel breakdown

R81
G187
B1
Red81 (31.8%)
Green187 (73.3%)
Blue1 (0.4%)
Hue94.19°
Saturation (HSL)98.94%
Lightness36.86%
Dominant channelGreen
Hex per channelR 51 · G BB · B 01

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Every value on this page was computed from “51bb01” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.