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Recognised as Colour

#5781DB

  • #5781DB
  • Blue
  • Dark
  • Nearest: Cornflower blue

#5781DB is a blue with RGB values 87, 129, 219 and HSL 221°, 65%, 60%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#5781DB#5781DB
HEX#5781DB
RGBrgb(87, 129, 219)
RGB (0–1)0.3412, 0.5059, 0.8588
RGB percentages34.1%, 50.6%, 85.9%
HSLhsl(220.9, 64.7%, 60%)
HSV / HSBhsv(220.9, 60.3%, 85.9%)
CMYK60.3%, 41.1%, 0%, 14.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,734,875
CSS custom property--colour: #5781DB;

Brightness & contrast

Relative luminance0.22841WCAG 2.x, 0 is black and 1 is white
Perceived brightness132.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.57:1
Contrast with white3.77:1WCAG normal text: Fail
Contrast with black5.57:1WCAG normal text: AA
Greyscale equivalent#7F7F7F
Inverted#A87E24

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#598ADFno red cones; affects about 1% of men; ΔE 5.1 from the original
Deuteranopia#477ED9no green cones; the most common form, about 1% of men; ΔE 2.8 from the original
Tritanopia#0095A3no blue cones; rare, and affects men and women equally; ΔE 52.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.77:1WCAG large text: AA
Contrast with black, large text5.57:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 7.9Dodgerblue · ΔE 14Royal blue · ΔE 21.2Medium purple · ΔE 24Steel blue · ΔE 25Slate blue · ΔE 26.1
Nearest named CSS colourCornflower blue (#6495ED)ΔE 7.94, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DBB157
Analogous#57C3DB, #6F57DB
Triadic#DB5781, #81DB57
Split complementary#DB6F57, #C3DB57
Tetradic#DB57C3, #DBB157, #57DB6F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D5E0F6
Lighter +20%#ABC0ED
Lighter +10%#81A1E4
Darker −10%#2D62D2
Darker −20%#244EA8
Darker −30%#1B3B7E
Darker −40%#122754
More saturated +25%#3D78F4
Less saturated −25%#718AC2

Channel breakdown

R87
G129
B219
Red87 (34.1%)
Green129 (50.6%)
Blue219 (85.9%)
Hue220.91°
Saturation (HSL)64.71%
Lightness60%
Dominant channelBlue
Hex per channelR 57 · G 81 · B DB

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Every value on this page was computed from “5781db” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.