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Colour

#28DADA

  • #28DADA
  • Cyan
  • Light
  • Nearest: Dark turquoise

#28DADA is a cyan with RGB values 40, 218, 218 and HSL 180°, 71%, 51%. It is a light colour, so black text on it reaches 12.1:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#28DADA#28DADA
HEX#28DADA
RGBrgb(40, 218, 218)
RGB (0–1)0.1569, 0.8549, 0.8549
RGB percentages15.7%, 85.5%, 85.5%
HSLhsl(180, 70.6%, 50.6%)
HSV / HSBhsv(180, 81.7%, 85.5%)
CMYK81.7%, 0%, 0%, 14.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,677,466
CSS custom property--colour: #28DADA;

Brightness & contrast

Relative luminance0.55656WCAG 2.x, 0 is black and 1 is white
Perceived brightness183.8 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 12.13:1
Contrast with white1.73:1WCAG normal text: Fail
Contrast with black12.13:1WCAG normal text: AAA
Greyscale equivalent#B4B4B4
Inverted#D72525

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CBCFDAno red cones; affects about 1% of men; ΔE 42.4 from the original
Deuteranopia#B3BDDBno green cones; the most common form, about 1% of men; ΔE 44 from the original
Tritanopia#00E1DAno blue cones; rare, and affects men and women equally; ΔE 5.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.73:1WCAG large text: Fail
Contrast with black, large text12.13:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 4.5Medium turquoise · ΔE 5.8Turquoise · ΔE 8.9Aqua · ΔE 13.8Cyan · ΔE 13.8Light seagreen · ΔE 15.2
Nearest named CSS colourDark turquoise (#00CED1)ΔE 4.45, a close match
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DA2828
Analogous#28DA81, #2881DA
Triadic#DA28DA, #DADA28
Split complementary#DA2881, #DA8128
Tetradic#8128DA, #DA2828, #81DA28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D6F8F8
Lighter +30%#ABF0F0
Lighter +20%#7FE9E9
Lighter +10%#54E1E1
Darker −10%#1EB1B1
Darker −20%#178585
Darker −30%#0F5A5A
Darker −40%#082E2E
More saturated +25%#08FAFA
Less saturated −25%#48BBBB

Channel breakdown

R40
G218
B218
Red40 (15.7%)
Green218 (85.5%)
Blue218 (85.5%)
Hue180°
Saturation (HSL)70.63%
Lightness50.59%
Dominant channelGreen and Blue
Hex per channelR 28 · G DA · B DA

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Every value on this page was computed from “28dada” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.