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Recognised as Colour

#00CDF4

  • #00CDF4
  • Cyan
  • Light
  • Nearest: Deep skyblue

#00CDF4 is a cyan with RGB values 0, 205, 244 and HSL 190°, 100%, 48%. It is a light colour, so black text on it reaches 11:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#00CDF4#00CDF4
HEX#00CDF4
RGBrgb(0, 205, 244)
RGB (0–1)0, 0.8039, 0.9569
RGB percentages0%, 80.4%, 95.7%
HSLhsl(189.6, 100%, 47.8%)
HSV / HSBhsv(189.6, 100%, 95.7%)
CMYK100%, 16%, 0%, 4.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer52,724
CSS custom property--colour: #00CDF4;

Brightness & contrast

Relative luminance0.50194WCAG 2.x, 0 is black and 1 is white
Perceived brightness177.4 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.04:1
Contrast with white1.9:1WCAG normal text: Fail
Contrast with black11.04:1WCAG normal text: AAA
Greyscale equivalent#A4A4A4
Inverted#FF320B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B4C7F6no red cones; affects about 1% of men; ΔE 33.1 from the original
Deuteranopia#99B3F4no green cones; the most common form, about 1% of men; ΔE 35.6 from the original
Tritanopia#00DAD9no blue cones; rare, and affects men and women equally; ΔE 24 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.9:1WCAG large text: Fail
Contrast with black, large text11.04:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 16.3Sky blue · ΔE 17Light skyblue · ΔE 18.2Dark turquoise · ΔE 21Medium turquoise · ΔE 24.3Light blue · ΔE 27.4
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 16.26, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F42700
Analogous#00F4A1, #0053F4
Triadic#F400CD, #CDF400
Split complementary#F40053, #F4A100
Tetradic#A100F4, #F42700, #53F400

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C1F5FF
Lighter +30%#8EEDFF
Lighter +20%#5BE5FF
Lighter +10%#28DDFF
Darker −10%#00A2C1
Darker −20%#00778E
Darker −30%#004C5B
Darker −40%#002228
More saturated +25%#00CDF4
Less saturated −25%#1FB8D6

Channel breakdown

R0
G205
B244
Red0 (0%)
Green205 (80.4%)
Blue244 (95.7%)
Hue189.59°
Saturation (HSL)100%
Lightness47.84%
Dominant channelBlue
Hex per channelR 00 · G CD · B F4

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Every value on this page was computed from “00cdf4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.