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Recognised as Colour

#537FD1

  • #537FD1
  • Blue
  • Dark
  • Nearest: Cornflower blue

#537FD1 is a blue with RGB values 83, 127, 209 and HSL 219°, 58%, 57%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#537FD1#537FD1
HEX#537FD1
RGBrgb(83, 127, 209)
RGB (0–1)0.3255, 0.498, 0.8196
RGB percentages32.5%, 49.8%, 82%
HSLhsl(219, 57.8%, 57.3%)
HSV / HSBhsv(219, 60.3%, 82%)
CMYK60.3%, 39.2%, 0%, 18%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,472,209
CSS custom property--colour: #537FD1;

Brightness & contrast

Relative luminance0.21621WCAG 2.x, 0 is black and 1 is white
Perceived brightness128.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.32:1
Contrast with white3.94:1WCAG normal text: Fail
Contrast with black5.32:1WCAG normal text: AA
Greyscale equivalent#7C7C7C
Inverted#AC802E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5C86D4no red cones; affects about 1% of men; ΔE 3.8 from the original
Deuteranopia#4A7BCFno green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#00919Eno blue cones; rare, and affects men and women equally; ΔE 48.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.94:1WCAG large text: AA
Contrast with black, large text5.32:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 8.7Dodgerblue · ΔE 17.5Steel blue · ΔE 20.3Royal blue · ΔE 25.3Medium purple · ΔE 27.1Dark slateblue · ΔE 28.3
Nearest named CSS colourCornflower blue (#6495ED)ΔE 8.67, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D1A553
Analogous#53BED1, #6653D1
Triadic#D1537F, #7FD153
Split complementary#D16653, #BED153
Tetradic#D153BE, #D1A553, #53D166

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F4F7FC
Lighter +30%#CCD9F1
Lighter +20%#A3BBE7
Lighter +10%#7B9DDC
Darker −10%#3363BE
Darker −20%#284E96
Darker −30%#1D396E
Darker −40%#132445
More saturated +25%#3877EC
Less saturated −25%#6E87B6

Channel breakdown

R83
G127
B209
Red83 (32.5%)
Green127 (49.8%)
Blue209 (82%)
Hue219.05°
Saturation (HSL)57.8%
Lightness57.25%
Dominant channelBlue
Hex per channelR 53 · G 7F · B D1

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Every value on this page was computed from “537fd1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.