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Recognised as Colour

#51FFFD

  • #51FFFD
  • Cyan
  • Light
  • Nearest: Aqua

#51FFFD is a cyan with RGB values 81, 255, 253 and HSL 179°, 100%, 66%. It is a light colour, so black text on it reaches 17.1:1 contrast (AAA for normal text). The nearest named colour is Aqua.

Colour values

#51FFFD#51FFFD
HEX#51FFFD
RGBrgb(81, 255, 253)
RGB (0–1)0.3176, 1, 0.9922
RGB percentages31.8%, 100%, 99.2%
HSLhsl(179.3, 100%, 65.9%)
HSV / HSBhsv(179.3, 68.2%, 100%)
CMYK68.2%, 0%, 0.8%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,373,949
CSS custom property--colour: #51FFFD;

Brightness & contrast

Relative luminance0.80361WCAG 2.x, 0 is black and 1 is white
Perceived brightness217.8 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 17.07:1
Contrast with white1.23:1WCAG normal text: Fail
Contrast with black17.07:1WCAG normal text: AAA
Greyscale equivalent#DADADA
Inverted#AE0002

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#EFF3FDno red cones; affects about 1% of men; ΔE 44.7 from the original
Deuteranopia#D5E0FEno green cones; the most common form, about 1% of men; ΔE 46 from the original
Tritanopia#00FFFEno blue cones; rare, and affects men and women equally; ΔE 5.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.23:1WCAG large text: Fail
Contrast with black, large text17.07:1WCAG large text: AAA

Named colours

Aqua · ΔE 5.1Cyan · ΔE 5.1Turquoise · ΔE 13.2Medium turquoise · ΔE 16.6Dark turquoise · ΔE 17Aquamarine · ΔE 21.7
Nearest named CSS colourAqua (#00FFFF)ΔE 5.14, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF5153
Analogous#51FFA6, #51AAFF
Triadic#FD51FF, #FFFD51
Split complementary#FF51AA, #FFA651
Tetradic#A651FF, #FF5153, #AAFF51

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#EAFFFF
Lighter +20%#B7FFFE
Lighter +10%#84FFFE
Darker −10%#1EFFFC
Darker −20%#00EAE7
Darker −30%#00B7B5
Darker −40%#008482
More saturated +25%#51FFFD
Less saturated −25%#67E9E8

Channel breakdown

R81
G255
B253
Red81 (31.8%)
Green255 (100%)
Blue253 (99.2%)
Hue179.31°
Saturation (HSL)100%
Lightness65.88%
Dominant channelGreen
Hex per channelR 51 · G FF · B FD

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