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Recognised as Colour

#04BCD9

  • #04BCD9
  • Cyan
  • Dark
  • Nearest: Dark turquoise

#04BCD9 is a cyan with RGB values 4, 188, 217 and HSL 188°, 96%, 43%. It is a dark colour, so black text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#04BCD9#04BCD9
HEX#04BCD9
RGBrgb(4, 188, 217)
RGB (0–1)0.0157, 0.7373, 0.851
RGB percentages1.6%, 73.7%, 85.1%
HSLhsl(188.2, 96.4%, 43.3%)
HSV / HSBhsv(188.2, 98.2%, 85.1%)
CMYK98.2%, 13.4%, 0%, 14.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer310,489
CSS custom property--colour: #04BCD9;

Brightness & contrast

Relative luminance0.41002WCAG 2.x, 0 is black and 1 is white
Perceived brightness161.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.2:1
Contrast with white2.28:1WCAG normal text: Fail
Contrast with black9.2:1WCAG normal text: AAA
Greyscale equivalent#979797
Inverted#FB4326

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A7B5DBno red cones; affects about 1% of men; ΔE 32.9 from the original
Deuteranopia#8FA4D9no green cones; the most common form, about 1% of men; ΔE 34.5 from the original
Tritanopia#00C7C5no blue cones; rare, and affects men and women equally; ΔE 19 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.28:1WCAG large text: Fail
Contrast with black, large text9.2:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 17.2Sky blue · ΔE 17.3Medium turquoise · ΔE 20.3Deep skyblue · ΔE 20.5Light skyblue · ΔE 20.7Light seagreen · ΔE 21.6
Nearest named CSS colourDark turquoise (#00CED1)ΔE 17.21, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D92104
Analogous#04D98B, #0452D9
Triadic#D904BC, #BCD904
Split complementary#D90452, #D98B04
Tetradic#8B04D9, #D92104, #52D904

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ACF2FD
Lighter +30%#79EBFD
Lighter +20%#47E3FC
Lighter +10%#15DBFB
Darker −10%#0391A7
Darker −20%#026575
Darker −30%#013A43
Darker −40%#000E11
More saturated +25%#00BFDD
Less saturated −25%#20A8BD

Channel breakdown

R4
G188
B217
Red4 (1.6%)
Green188 (73.7%)
Blue217 (85.1%)
Hue188.17°
Saturation (HSL)96.38%
Lightness43.33%
Dominant channelBlue
Hex per channelR 04 · G BC · B D9

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Every value on this page was computed from “04bcd9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.