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Colour

#4288EE

  • #4288EE
  • Blue
  • Dark
  • Nearest: Dodgerblue

#4288EE is a blue with RGB values 66, 136, 238 and HSL 216°, 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

#4288EE#4288EE
HEX#4288EE
RGBrgb(66, 136, 238)
RGB (0–1)0.2588, 0.5333, 0.9333
RGB percentages25.9%, 53.3%, 93.3%
HSLhsl(215.6, 83.5%, 59.6%)
HSV / HSBhsv(215.6, 72.3%, 93.3%)
CMYK72.3%, 42.9%, 0%, 6.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,360,430
CSS custom property--colour: #4288EE;

Brightness & contrast

Relative luminance0.2494WCAG 2.x, 0 is black and 1 is white
Perceived brightness136.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.99:1
Contrast with white3.51:1WCAG normal text: Fail
Contrast with black5.99:1WCAG normal text: AA
Greyscale equivalent#808080
Inverted#BD7711

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5691F2no red cones; affects about 1% of men; ΔE 4.9 from the original
Deuteranopia#3681ECno green cones; the most common form, about 1% of men; ΔE 4.3 from the original
Tritanopia#00A0AFno blue cones; rare, and affects men and women equally; ΔE 57.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.51:1WCAG large text: AA
Contrast with black, large text5.99:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 6.4Cornflower blue · ΔE 10.1Royal blue · ΔE 18.7Medium purple · ΔE 26.2Slate blue · ΔE 26.9Steel blue · ΔE 30.5
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 6.39, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EEA842
Analogous#42DEEE, #5242EE
Triadic#EE4288, #88EE42
Split complementary#EE5242, #DEEE42
Tetradic#EE42DE, #EEA842, #42EE52

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FDFEFF
Lighter +30%#CEE0FB
Lighter +20%#A0C3F6
Lighter +10%#71A5F2
Darker −10%#156BE8
Darker −20%#1155B9
Darker −30%#0C408B
Darker −40%#082A5C
More saturated +25%#3185FF
Less saturated −25%#5C8DD4

Channel breakdown

R66
G136
B238
Red66 (25.9%)
Green136 (53.3%)
Blue238 (93.3%)
Hue215.58°
Saturation (HSL)83.5%
Lightness59.61%
Dominant channelBlue
Hex per channelR 42 · G 88 · B EE

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Every value on this page was computed from “4288ee” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.