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Recognised as Colour

#51D0DA

  • #51D0DA
  • Cyan
  • Light
  • Nearest: Dark turquoise

#51D0DA is a cyan with RGB values 81, 208, 218 and HSL 184°, 65%, 59%. It is a light colour, so black text on it reaches 11.4:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#51D0DA#51D0DA
HEX#51D0DA
RGBrgb(81, 208, 218)
RGB (0–1)0.3176, 0.8157, 0.8549
RGB percentages31.8%, 81.6%, 85.5%
HSLhsl(184.4, 64.9%, 58.6%)
HSV / HSBhsv(184.4, 62.8%, 85.5%)
CMYK62.8%, 4.6%, 0%, 14.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,361,882
CSS custom property--colour: #51D0DA;

Brightness & contrast

Relative luminance0.51923WCAG 2.x, 0 is black and 1 is white
Perceived brightness181 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.38:1
Contrast with white1.84:1WCAG normal text: Fail
Contrast with black11.38:1WCAG normal text: AAA
Greyscale equivalent#B6B6B6
Inverted#AE2F25

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#C1C8DBno red cones; affects about 1% of men; ΔE 33.5 from the original
Deuteranopia#ACB8DBno green cones; the most common form, about 1% of men; ΔE 35.1 from the original
Tritanopia#00D8D3no blue cones; rare, and affects men and women equally; ΔE 13.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.84:1WCAG large text: Fail
Contrast with black, large text11.38:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 8.9Medium turquoise · ΔE 9.1Light seagreen · ΔE 15.7Turquoise · ΔE 17.3Sky blue · ΔE 17.9Pale turquoise · ΔE 19.7
Nearest named CSS colourDark turquoise (#00CED1)ΔE 8.86, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DA5B51
Analogous#51DAA0, #518BDA
Triadic#DA51D0, #D0DA51
Split complementary#DA518B, #DA9F51
Tetradic#A051DA, #DA5B51, #8CDA51

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F9FDFE
Lighter +30%#CFF2F5
Lighter +20%#A5E7EC
Lighter +10%#7BDBE3
Darker −10%#2BC1CD
Darker −20%#2399A2
Darker −30%#1A7178
Darker −40%#114A4E
More saturated +25%#37E7F4
Less saturated −25%#6BB9C0

Channel breakdown

R81
G208
B218
Red81 (31.8%)
Green208 (81.6%)
Blue218 (85.5%)
Hue184.38°
Saturation (HSL)64.93%
Lightness58.63%
Dominant channelBlue
Hex per channelR 51 · G D0 · B DA

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Every value on this page was computed from “51d0da” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.