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Recognised as Colour

#28C9D4

  • #28C9D4
  • Cyan
  • Dark
  • Nearest: Dark turquoise

#28C9D4 is a cyan with RGB values 40, 201, 212 and HSL 184°, 68%, 49%. It is a dark colour, so black text on it reaches 10.4:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#28C9D4#28C9D4
HEX#28C9D4
RGBrgb(40, 201, 212)
RGB (0–1)0.1569, 0.7882, 0.8314
RGB percentages15.7%, 78.8%, 83.1%
HSLhsl(183.8, 68.3%, 49.4%)
HSV / HSBhsv(183.8, 81.1%, 83.1%)
CMYK81.1%, 5.2%, 0%, 16.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,673,108
CSS custom property--colour: #28C9D4;

Brightness & contrast

Relative luminance0.46978WCAG 2.x, 0 is black and 1 is white
Perceived brightness171.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.4:1
Contrast with white2.02:1WCAG normal text: Fail
Contrast with black10.4:1WCAG normal text: AAA
Greyscale equivalent#A8A8A8
Inverted#D7362B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B9C0D5no red cones; affects about 1% of men; ΔE 37.3 from the original
Deuteranopia#A2AFD5no green cones; the most common form, about 1% of men; ΔE 39 from the original
Tritanopia#00D1CCno blue cones; rare, and affects men and women equally; ΔE 10.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.02:1WCAG large text: Fail
Contrast with black, large text10.4:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 6.1Medium turquoise · ΔE 9.2Light seagreen · ΔE 13.6Turquoise · ΔE 17.2Sky blue · ΔE 21.3Aqua · ΔE 21.6
Nearest named CSS colourDark turquoise (#00CED1)ΔE 6.12, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D43328
Analogous#28D489, #2873D4
Triadic#D428C9, #C9D428
Split complementary#D42873, #D48928
Tetradic#8928D4, #D43328, #73D428

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D2F4F6
Lighter +30%#A7EAEE
Lighter +20%#7CDFE6
Lighter +10%#51D5DE
Darker −10%#20A0A9
Darker −20%#18787E
Darker −30%#104F53
Darker −40%#082628
More saturated +25%#08E4F4
Less saturated −25%#48AEB5

Channel breakdown

R40
G201
B212
Red40 (15.7%)
Green201 (78.8%)
Blue212 (83.1%)
Hue183.84°
Saturation (HSL)68.25%
Lightness49.41%
Dominant channelBlue
Hex per channelR 28 · G C9 · B D4

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Every value on this page was computed from “28c9d4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.