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Recognised as Colour

#51C7D6

  • #51C7D6
  • Cyan
  • Dark
  • Nearest: Dark turquoise

#51C7D6 is a cyan with RGB values 81, 199, 214 and HSL 187°, 62%, 58%. It is a dark colour, so black text on it reaches 10.5:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#51C7D6#51C7D6
HEX#51C7D6
RGBrgb(81, 199, 214)
RGB (0–1)0.3176, 0.7804, 0.8392
RGB percentages31.8%, 78%, 83.9%
HSLhsl(186.8, 61.9%, 57.8%)
HSV / HSBhsv(186.8, 62.1%, 83.9%)
CMYK62.1%, 7%, 0%, 16.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,359,574
CSS custom property--colour: #51C7D6;

Brightness & contrast

Relative luminance0.47451WCAG 2.x, 0 is black and 1 is white
Perceived brightness174.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.49:1
Contrast with white2:1WCAG normal text: Fail
Contrast with black10.49:1WCAG normal text: AAA
Greyscale equivalent#AFAFAF
Inverted#AE3829

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B7C0D7no red cones; affects about 1% of men; ΔE 30.5 from the original
Deuteranopia#A3B1D6no green cones; the most common form, about 1% of men; ΔE 31.8 from the original
Tritanopia#00CFCBno blue cones; rare, and affects men and women equally; ΔE 15.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2:1WCAG large text: Fail
Contrast with black, large text10.49:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 12.3Medium turquoise · ΔE 12.9Sky blue · ΔE 14.9Light seagreen · ΔE 16.7Cadetblue · ΔE 18.7Powder blue · ΔE 20.7
Nearest named CSS colourDark turquoise (#00CED1)ΔE 12.3, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D66051
Analogous#51D6A2, #5185D6
Triadic#D651C7, #C7D651
Split complementary#D65185, #D6A251
Tetradic#A251D6, #D66051, #85D651

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F6FCFD
Lighter +30%#CDEFF3
Lighter +20%#A4E2E9
Lighter +10%#7AD4E0
Darker −10%#2FB4C5
Darker −20%#258F9C
Darker −30%#1B6973
Darker −40%#11434A
More saturated +25%#36DCF1
Less saturated −25%#6CB2BB

Channel breakdown

R81
G199
B214
Red81 (31.8%)
Green199 (78%)
Blue214 (83.9%)
Hue186.77°
Saturation (HSL)61.86%
Lightness57.84%
Dominant channelBlue
Hex per channelR 51 · G C7 · B D6

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Every value on this page was computed from “51c7d6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.