Recognised as Colour

#4289EE

#4289EE
Blue
Dark
Nearest: Dodgerblue

#4289EE is a blue with RGB values 66, 137, 238 and HSL 215°, 83%, 60%. It is a dark colour, so black text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#4289EE#4289EE

HEX#4289EE

RGBrgb(66, 137, 238)

RGB (0–1)0.2588, 0.5373, 0.9333

RGB percentages25.9%, 53.7%, 93.3%

HSLhsl(215.2, 83.5%, 59.6%)

HSV / HSBhsv(215.2, 72.3%, 93.3%)

CMYK72.3%, 42.4%, 0%, 6.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,360,686

CSS custom property--colour: #4289EE;

Brightness & contrast

Relative luminance0.25223WCAG 2.x, 0 is black and 1 is white

Perceived brightness137 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.04:1

Contrast with white3.47:1WCAG normal text: Fail

Contrast with black6.04:1WCAG normal text: AA

Greyscale equivalent#818181

Inverted#BD7611

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5892F2no red cones; affects about 1% of men; ΔE 5 from the original

Deuteranopia#3982ECno green cones; the most common form, about 1% of men; ΔE 4.3 from the original

Tritanopia#00A1B0no blue cones; rare, and affects men and women equally; ΔE 56.7 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text3.47:1WCAG large text: AA

Contrast with black, large text6.04:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 6.5 Cornflower blue · ΔE 9.5 Royal blue · ΔE 19.5 Medium purple · ΔE 26.7 Slate blue · ΔE 27.5 Steel blue · ΔE 29.8

Nearest named CSS colourDodgerblue (#1E90FF)ΔE 6.55, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#EEA742

Analogous#42DFEE, #5142EE

Triadic#EE4289, #89EE42

Split complementary#EE5142, #DFEE42

Tetradic#EE42DF, #EEA742, #42EE51

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FDFEFF

Lighter +30%#CEE1FB

Lighter +20%#A0C3F6

Lighter +10%#71A6F2

Darker −10%#156CE8

Darker −20%#1156B9

Darker −30%#0C418B

Darker −40%#082B5C

More saturated +25%#3186FF

Less saturated −25%#5C8DD4

Channel breakdown

R66

G137

B238

Red66 (25.9%)

Green137 (53.7%)

Blue238 (93.3%)

Hue215.23°

Saturation (HSL)83.5%

Lightness59.61%

Dominant channelBlue

Hex per channelR 42 · G 89 · B EE

Keep nerding

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#4289EE

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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