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Recognised as Colour

#04BFF5

  • #04BFF5
  • Cyan
  • Dark
  • Nearest: Deep skyblue

#04BFF5 is a cyan with RGB values 4, 191, 245 and HSL 193°, 97%, 49%. It is a dark colour, so black text on it reaches 9.8:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#04BFF5#04BFF5
HEX#04BFF5
RGBrgb(4, 191, 245)
RGB (0–1)0.0157, 0.749, 0.9608
RGB percentages1.6%, 74.9%, 96.1%
HSLhsl(193.4, 96.8%, 48.8%)
HSV / HSBhsv(193.4, 98.4%, 96.1%)
CMYK98.4%, 22%, 0%, 3.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer311,285
CSS custom property--colour: #04BFF5;

Brightness & contrast

Relative luminance0.4388WCAG 2.x, 0 is black and 1 is white
Perceived brightness168.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.78:1
Contrast with white2.15:1WCAG normal text: Fail
Contrast with black9.78:1WCAG normal text: AAA
Greyscale equivalent#9B9B9B
Inverted#FB400A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A2BCF8no red cones; affects about 1% of men; ΔE 27.1 from the original
Deuteranopia#87A8F4no green cones; the most common form, about 1% of men; ΔE 29.7 from the original
Tritanopia#00CED1no blue cones; rare, and affects men and women equally; ΔE 31 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.15:1WCAG large text: Fail
Contrast with black, large text9.78:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 5.8Light skyblue · ΔE 15.7Sky blue · ΔE 19Steel blue · ΔE 26.6Light blue · ΔE 30.5Light steelblue · ΔE 30.6
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 5.85, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F53A04
Analogous#04F5B2, #0447F5
Triadic#F504BF, #BFF504
Split complementary#F50446, #F5B204
Tetradic#B304F5, #F53A04, #47F504

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C7F2FE
Lighter +30%#95E6FD
Lighter +20%#63DAFC
Lighter +10%#30CEFC
Darker −10%#0398C3
Darker −20%#027191
Darker −30%#024A5E
Darker −40%#01232C
More saturated +25%#00C1F9
Less saturated −25%#23AED6

Channel breakdown

R4
G191
B245
Red4 (1.6%)
Green191 (74.9%)
Blue245 (96.1%)
Hue193.44°
Saturation (HSL)96.79%
Lightness48.82%
Dominant channelBlue
Hex per channelR 04 · G BF · B F5

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Every value on this page was computed from “04bff5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.