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Colour

#5191FF

  • #5191FF
  • Blue
  • Dark
  • Nearest: Dodgerblue

#5191FF is a blue with RGB values 81, 145, 255 and HSL 218°, 100%, 66%. It is a dark colour, so black text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#5191FF#5191FF
HEX#5191FF
RGBrgb(81, 145, 255)
RGB (0–1)0.3176, 0.5686, 1
RGB percentages31.8%, 56.9%, 100%
HSLhsl(217.9, 100%, 65.9%)
HSV / HSBhsv(217.9, 68.2%, 100%)
CMYK68.2%, 43.1%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,345,791
CSS custom property--colour: #5191FF;

Brightness & contrast

Relative luminance0.2922WCAG 2.x, 0 is black and 1 is white
Perceived brightness147.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.84:1
Contrast with white3.07:1WCAG normal text: Fail
Contrast with black6.84:1WCAG normal text: AA
Greyscale equivalent#8B8B8B
Inverted#AE6E00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5B9CFFno red cones; affects about 1% of men; ΔE 8.1 from the original
Deuteranopia#3D8CFDno green cones; the most common form, about 1% of men; ΔE 3.2 from the original
Tritanopia#00ABBCno blue cones; rare, and affects men and women equally; ΔE 61.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.07:1WCAG large text: AA
Contrast with black, large text6.84:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 5.5Cornflower blue · ΔE 12.6Royal blue · ΔE 18.2Medium purple · ΔE 25.5Slate blue · ΔE 26.8Medium slateblue · ΔE 28.4
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 5.45, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFBF51
Analogous#51E8FF, #6851FF
Triadic#FF5191, #91FF51
Split complementary#FF6851, #E8FF51
Tetradic#FF51E8, #FFBF51, #51FF68

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#EAF2FF
Lighter +20%#B7D1FF
Lighter +10%#84B1FF
Darker −10%#1E71FF
Darker −20%#0056EA
Darker −30%#0043B7
Darker −40%#003184
More saturated +25%#5191FF
Less saturated −25%#6797E9

Channel breakdown

R81
G145
B255
Red81 (31.8%)
Green145 (56.9%)
Blue255 (100%)
Hue217.93°
Saturation (HSL)100%
Lightness65.88%
Dominant channelBlue
Hex per channelR 51 · G 91 · B FF

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Every value on this page was computed from “5191ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.