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Recognised as Colour

#51E6BB

  • #51E6BB
  • Cyan
  • Light
  • Nearest: Aquamarine

#51E6BB is a cyan with RGB values 81, 230, 187 and HSL 163°, 75%, 61%. It is a light colour, so black text on it reaches 13.4:1 contrast (AAA for normal text). The nearest named colour is Aquamarine.

Colour values

#51E6BB#51E6BB
HEX#51E6BB
RGBrgb(81, 230, 187)
RGB (0–1)0.3176, 0.902, 0.7333
RGB percentages31.8%, 90.2%, 73.3%
HSLhsl(162.7, 74.9%, 61%)
HSV / HSBhsv(162.7, 64.8%, 90.2%)
CMYK64.8%, 0%, 18.7%, 9.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,367,483
CSS custom property--colour: #51E6BB;

Brightness & contrast

Relative luminance0.61931WCAG 2.x, 0 is black and 1 is white
Perceived brightness192.4 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 13.39:1
Contrast with white1.57:1WCAG normal text: Fail
Contrast with black13.39:1WCAG normal text: AAA
Greyscale equivalent#C3C3C3
Inverted#AE1944

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#E0D7B9no red cones; affects about 1% of men; ΔE 48.2 from the original
Deuteranopia#CBC8BEno green cones; the most common form, about 1% of men; ΔE 48.9 from the original
Tritanopia#00E8DAno blue cones; rare, and affects men and women equally; ΔE 15.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.57:1WCAG large text: Fail
Contrast with black, large text13.39:1WCAG large text: AAA

Named colours

Aquamarine · ΔE 10Medium aquamarine · ΔE 13.3Turquoise · ΔE 14.6Medium turquoise · ΔE 22.3Medium seagreen · ΔE 23.1Aqua · ΔE 25
Nearest named CSS colourAquamarine (#7FFFD4)ΔE 9.97, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E6517C
Analogous#51E670, #51C7E6
Triadic#BB51E6, #E6BB51
Split complementary#E651C7, #E67051
Tetradic#7051E6, #E6517C, #C7E651

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D7F9EF
Lighter +20%#AAF3DE
Lighter +10%#7EECCC
Darker −10%#24E0AA
Darker −20%#1AB78A
Darker −30%#148A68
Darker −40%#0D5E46
More saturated +25%#38FFC6
Less saturated −25%#6ACDB0

Channel breakdown

R81
G230
B187
Red81 (31.8%)
Green230 (90.2%)
Blue187 (73.3%)
Hue162.68°
Saturation (HSL)74.87%
Lightness60.98%
Dominant channelGreen
Hex per channelR 51 · G E6 · B BB

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Every value on this page was computed from “51e6bb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.