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Recognised as Colour

#51DDCF

  • #51DDCF
  • Cyan
  • Light
  • Nearest: Turquoise

#51DDCF is a cyan with RGB values 81, 221, 207 and HSL 174°, 67%, 59%. It is a light colour, so black text on it reaches 12.6:1 contrast (AAA for normal text). The nearest named colour is Turquoise.

Colour values

#51DDCF#51DDCF
HEX#51DDCF
RGBrgb(81, 221, 207)
RGB (0–1)0.3176, 0.8667, 0.8118
RGB percentages31.8%, 86.7%, 81.2%
HSLhsl(174, 67.3%, 59.2%)
HSV / HSBhsv(174, 63.3%, 86.7%)
CMYK63.3%, 0%, 6.3%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,365,199
CSS custom property--colour: #51DDCF;

Brightness & contrast

Relative luminance0.57967WCAG 2.x, 0 is black and 1 is white
Perceived brightness188.5 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 12.59:1
Contrast with white1.67:1WCAG normal text: Fail
Contrast with black12.59:1WCAG normal text: AAA
Greyscale equivalent#BEBEBE
Inverted#AE2230

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D2D1CFno red cones; affects about 1% of men; ΔE 41.1 from the original
Deuteranopia#BDC2D1no green cones; the most common form, about 1% of men; ΔE 42 from the original
Tritanopia#00E2D8no blue cones; rare, and affects men and women equally; ΔE 7.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.67:1WCAG large text: Fail
Contrast with black, large text12.59:1WCAG large text: AAA

Named colours

Turquoise · ΔE 3.5Medium turquoise · ΔE 6.5Dark turquoise · ΔE 10.7Medium aquamarine · ΔE 13.7Light seagreen · ΔE 15.4Aqua · ΔE 16.2
Nearest named CSS colourTurquoise (#40E0D0)ΔE 3.52, a close match
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DD515F
Analogous#51DD89, #51A5DD
Triadic#CF51DD, #DDCF51
Split complementary#DD51A5, #DD8951
Tetradic#8951DD, #DD515F, #A5DD51

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FCFEFE
Lighter +30%#D1F6F2
Lighter +20%#A6EEE7
Lighter +10%#7CE5DB
Darker −10%#29D2C1
Darker −20%#21A79A
Darker −30%#187D73
Darker −40%#10524B
More saturated +25%#37F7E4
Less saturated −25%#6BC3BA

Channel breakdown

R81
G221
B207
Red81 (31.8%)
Green221 (86.7%)
Blue207 (81.2%)
Hue174°
Saturation (HSL)67.31%
Lightness59.22%
Dominant channelGreen
Hex per channelR 51 · G DD · B CF

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