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Recognised as Colour

#4180FF

  • #4180FF
  • Blue
  • Dark
  • Nearest: Royal blue

#4180FF is a blue with RGB values 65, 128, 255 and HSL 220°, 100%, 63%. It is a dark colour, so black text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#4180FF#4180FF
HEX#4180FF
RGBrgb(65, 128, 255)
RGB (0–1)0.2549, 0.502, 1
RGB percentages25.5%, 50.2%, 100%
HSLhsl(220.1, 100%, 62.7%)
HSV / HSBhsv(220.1, 74.5%, 100%)
CMYK74.5%, 49.8%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,292,863
CSS custom property--colour: #4180FF;

Brightness & contrast

Relative luminance0.23782WCAG 2.x, 0 is black and 1 is white
Perceived brightness135.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.76:1
Contrast with white3.65:1WCAG normal text: Fail
Contrast with black5.76:1WCAG normal text: AA
Greyscale equivalent#7C7C7C
Inverted#BE7F00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#318FFFno red cones; affects about 1% of men; ΔE 12.7 from the original
Deuteranopia#007EFCno green cones; the most common form, about 1% of men; ΔE 4.5 from the original
Tritanopia#009FB3no blue cones; rare, and affects men and women equally; ΔE 70 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.65:1WCAG large text: AA
Contrast with black, large text5.76:1WCAG large text: AAA

Named colours

Royal blue · ΔE 9.6Dodgerblue · ΔE 14.4Medium slateblue · ΔE 19.1Slate blue · ΔE 20.4Medium purple · ΔE 23.6Cornflower blue · ΔE 24.6
Nearest named CSS colourRoyal blue (#4169E1)ΔE 9.55, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFC041
Analogous#41DFFF, #6141FF
Triadic#FF4180, #80FF41
Split complementary#FF6141, #DFFF41
Tetradic#FF41DF, #FFC041, #41FF61

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DAE6FF
Lighter +20%#A7C4FF
Lighter +10%#74A2FF
Darker −10%#0E5EFF
Darker −20%#0048DA
Darker −30%#0037A7
Darker −40%#002674
More saturated +25%#4180FF
Less saturated −25%#5988E7

Channel breakdown

R65
G128
B255
Red65 (25.5%)
Green128 (50.2%)
Blue255 (100%)
Hue220.11°
Saturation (HSL)100%
Lightness62.75%
Dominant channelBlue
Hex per channelR 41 · G 80 · B FF

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Every value on this page was computed from “4180ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.