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Recognised as Colour

#3887D9

  • #3887D9
  • Blue
  • Dark
  • Nearest: Cornflower blue

#3887D9 is a blue with RGB values 56, 135, 217 and HSL 211°, 68%, 54%. 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

#3887D9#3887D9
HEX#3887D9
RGBrgb(56, 135, 217)
RGB (0–1)0.2196, 0.5294, 0.851
RGB percentages22%, 52.9%, 85.1%
HSLhsl(210.6, 67.9%, 53.5%)
HSV / HSBhsv(210.6, 74.2%, 85.1%)
CMYK74.2%, 37.8%, 0%, 14.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,704,793
CSS custom property--colour: #3887D9;

Brightness & contrast

Relative luminance0.23178WCAG 2.x, 0 is black and 1 is white
Perceived brightness130.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.64:1
Contrast with white3.73:1WCAG normal text: Fail
Contrast with black5.64:1WCAG normal text: AA
Greyscale equivalent#7C7C7C
Inverted#C77826

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#618CDCno red cones; affects about 1% of men; ΔE 6.9 from the original
Deuteranopia#487ED7no green cones; the most common form, about 1% of men; ΔE 7.7 from the original
Tritanopia#009AA5no blue cones; rare, and affects men and women equally; ΔE 47.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.73:1WCAG large text: AA
Contrast with black, large text5.64:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 8.8Dodgerblue · ΔE 16.4Steel blue · ΔE 18.6Deep skyblue · ΔE 28.1Royal blue · ΔE 28.9Medium purple · ΔE 33.2
Nearest named CSS colourCornflower blue (#6495ED)ΔE 8.8, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D98A38
Analogous#38D8D9, #3938D9
Triadic#D93887, #87D938
Split complementary#D93938, #D8D938
Tetradic#D938D8, #D98A38, #38D939

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E3EEFA
Lighter +30%#B8D4F2
Lighter +20%#8EBBE9
Lighter +10%#63A1E1
Darker −10%#246EBA
Darker −20%#1B5490
Darker −30%#133B65
Darker −40%#0B223A
More saturated +25%#1A86F7
Less saturated −25%#5688BB

Channel breakdown

R56
G135
B217
Red56 (22%)
Green135 (52.9%)
Blue217 (85.1%)
Hue210.56°
Saturation (HSL)67.93%
Lightness53.53%
Dominant channelBlue
Hex per channelR 38 · G 87 · B D9

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Every value on this page was computed from “3887d9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.