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Recognised as Colour

#4289F4

  • #4289F4
  • Blue
  • Dark
  • Nearest: Dodgerblue

#4289F4 is a blue with RGB values 66, 137, 244 and HSL 216°, 89%, 61%. It is a dark colour, so black text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#4289F4#4289F4
HEX#4289F4
RGBrgb(66, 137, 244)
RGB (0–1)0.2588, 0.5373, 0.9569
RGB percentages25.9%, 53.7%, 95.7%
HSLhsl(216.1, 89%, 60.8%)
HSV / HSBhsv(216.1, 73%, 95.7%)
CMYK73%, 43.9%, 0%, 4.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,360,692
CSS custom property--colour: #4289F4;

Brightness & contrast

Relative luminance0.25581WCAG 2.x, 0 is black and 1 is white
Perceived brightness138.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.12:1
Contrast with white3.43:1WCAG normal text: Fail
Contrast with black6.12:1WCAG normal text: AA
Greyscale equivalent#828282
Inverted#BD760B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5393F8no red cones; affects about 1% of men; ΔE 5.5 from the original
Deuteranopia#3083F2no green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#00A2B3no blue cones; rare, and affects men and women equally; ΔE 59.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.43:1WCAG large text: AA
Contrast with black, large text6.12:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 5.1Cornflower blue · ΔE 12.3Royal blue · ΔE 17Medium purple · ΔE 25.6Slate blue · ΔE 25.9Medium slateblue · ΔE 28.7
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 5.06, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F4AD42
Analogous#42E2F4, #5442F4
Triadic#F44289, #89F442
Split complementary#F45442, #E2F442
Tetradic#F442E2, #F4AD42, #42F454

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D3E3FC
Lighter +20%#A2C5FA
Lighter +10%#72A7F7
Darker −10%#126BF1
Darker −20%#0B55C5
Darker −30%#094094
Darker −40%#062B64
More saturated +25%#3787FF
Less saturated −25%#5B8EDB

Channel breakdown

R66
G137
B244
Red66 (25.9%)
Green137 (53.7%)
Blue244 (95.7%)
Hue216.07°
Saturation (HSL)89%
Lightness60.78%
Dominant channelBlue
Hex per channelR 42 · G 89 · B F4

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Every value on this page was computed from “4289f4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.