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Recognised as Colour

#4381FF

  • #4381FF
  • Blue
  • Dark
  • Nearest: Royal blue

#4381FF is a blue with RGB values 67, 129, 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

#4381FF#4381FF
HEX#4381FF
RGBrgb(67, 129, 255)
RGB (0–1)0.2627, 0.5059, 1
RGB percentages26.3%, 50.6%, 100%
HSLhsl(220.2, 100%, 63.1%)
HSV / HSBhsv(220.2, 73.7%, 100%)
CMYK73.7%, 49.4%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,424,191
CSS custom property--colour: #4381FF;

Brightness & contrast

Relative luminance0.24114WCAG 2.x, 0 is black and 1 is white
Perceived brightness136.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.82:1
Contrast with white3.61:1WCAG normal text: Fail
Contrast with black5.82:1WCAG normal text: AA
Greyscale equivalent#7D7D7D
Inverted#BC7E00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3490FFno red cones; affects about 1% of men; ΔE 12.7 from the original
Deuteranopia#007FFCno green cones; the most common form, about 1% of men; ΔE 4.8 from the original
Tritanopia#009FB4no blue cones; rare, and affects men and women equally; ΔE 68.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.61:1WCAG large text: AA
Contrast with black, large text5.82:1WCAG large text: AAA

Named colours

Royal blue · ΔE 9.8Dodgerblue · ΔE 13.7Medium slateblue · ΔE 19.4Slate blue · ΔE 20.5Medium purple · ΔE 23.4Cornflower blue · ΔE 23.8
Nearest named CSS colourRoyal blue (#4169E1)ΔE 9.79, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFC143
Analogous#43DFFF, #6343FF
Triadic#FF4381, #81FF43
Split complementary#FF6343, #DFFF43
Tetradic#FF43DF, #FFC143, #43FF63

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DCE8FF
Lighter +20%#A9C5FF
Lighter +10%#76A3FF
Darker −10%#105FFF
Darker −20%#0049DC
Darker −30%#0038A9
Darker −40%#002776
More saturated +25%#4381FF
Less saturated −25%#5A89E8

Channel breakdown

R67
G129
B255
Red67 (26.3%)
Green129 (50.6%)
Blue255 (100%)
Hue220.21°
Saturation (HSL)100%
Lightness63.14%
Dominant channelBlue
Hex per channelR 43 · G 81 · B FF

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Every value on this page was computed from “4381ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.