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Recognised as Colour

#04BFDF

  • #04BFDF
  • Cyan
  • Dark
  • Nearest: Sky blue

#04BFDF is a cyan with RGB values 4, 191, 223 and HSL 189°, 96%, 45%. It is a dark colour, so black text on it reaches 9.5:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#04BFDF#04BFDF
HEX#04BFDF
RGBrgb(4, 191, 223)
RGB (0–1)0.0157, 0.749, 0.8745
RGB percentages1.6%, 74.9%, 87.5%
HSLhsl(188.8, 96.5%, 44.5%)
HSV / HSBhsv(188.8, 98.2%, 87.5%)
CMYK98.2%, 14.3%, 0%, 12.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer311,263
CSS custom property--colour: #04BFDF;

Brightness & contrast

Relative luminance0.42615WCAG 2.x, 0 is black and 1 is white
Perceived brightness164.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.52:1
Contrast with white2.21:1WCAG normal text: Fail
Contrast with black9.52:1WCAG normal text: AAA
Greyscale equivalent#9A9A9A
Inverted#FB4020

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A9B9E1no red cones; affects about 1% of men; ΔE 32.3 from the original
Deuteranopia#90A7DFno green cones; the most common form, about 1% of men; ΔE 34.1 from the original
Tritanopia#00CAC9no blue cones; rare, and affects men and women equally; ΔE 20.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.21:1WCAG large text: Fail
Contrast with black, large text9.52:1WCAG large text: AAA

Named colours

Sky blue · ΔE 16.8Dark turquoise · ΔE 18.4Deep skyblue · ΔE 18.8Light skyblue · ΔE 19.6Medium turquoise · ΔE 21.6Light seagreen · ΔE 23.4
Nearest named CSS colourSky blue (#87CEEB)ΔE 16.8, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DF2404
Analogous#04DF91, #0452DF
Triadic#DF04BF, #BFDF04
Split complementary#DF0452, #DF9104
Tetradic#9204DF, #DF2404, #52DF04

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B1F2FE
Lighter +30%#7FEAFD
Lighter +20%#4DE2FC
Lighter +10%#1BDAFB
Darker −10%#0394AD
Darker −20%#02697B
Darker −30%#013E49
Darker −40%#001317
More saturated +25%#00C2E3
Less saturated −25%#20ABC3

Channel breakdown

R4
G191
B223
Red4 (1.6%)
Green191 (74.9%)
Blue223 (87.5%)
Hue188.77°
Saturation (HSL)96.48%
Lightness44.51%
Dominant channelBlue
Hex per channelR 04 · G BF · B DF

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