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Recognised as Colour

#0550BD

  • #0550BD
  • Blue
  • Dark
  • Nearest: Royal blue

#0550BD is a blue with RGB values 5, 80, 189 and HSL 216°, 95%, 38%. It is a dark colour, so white text on it reaches 7.3:1 contrast (AAA for normal text). The nearest named colour is Royal blue.

Colour values

#0550BD#0550BD
HEX#0550BD
RGBrgb(5, 80, 189)
RGB (0–1)0.0196, 0.3137, 0.7412
RGB percentages2%, 31.4%, 74.1%
HSLhsl(215.5, 94.8%, 38%)
HSV / HSBhsv(215.5, 97.4%, 74.1%)
CMYK97.4%, 57.7%, 0%, 25.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer348,349
CSS custom property--colour: #0550BD;

Brightness & contrast

Relative luminance0.09444WCAG 2.x, 0 is black and 1 is white
Perceived brightness88.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.27:1
Contrast with white7.27:1WCAG normal text: AAA
Contrast with black2.89:1WCAG normal text: Fail
Greyscale equivalent#484848
Inverted#FAAF42

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005FC1no red cones; affects about 1% of men; ΔE 10.8 from the original
Deuteranopia#004FBBno green cones; the most common form, about 1% of men; ΔE 0.7 from the original
Tritanopia#006C7Eno blue cones; rare, and affects men and women equally; ΔE 62.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.27:1WCAG large text: AAA
Contrast with black, large text2.89:1WCAG large text: Fail

Named colours

Royal blue · ΔE 11.6Slate blue · ΔE 15.5Dark slateblue · ΔE 21.4Medium slateblue · ΔE 23.2Rebecca purple · ΔE 24.7Medium purple · ΔE 25.5
Nearest named CSS colourRoyal blue (#4169E1)ΔE 11.58, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BD7205
Analogous#05ACBD, #1605BD
Triadic#BD0550, #50BD05
Split complementary#BD1605, #ACBD05
Tetradic#BD05AC, #BD7205, #05BD16

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#92BDFC
Lighter +30%#609FFB
Lighter +20%#2F81F9
Lighter +10%#0665EF
Darker −10%#043B8B
Darker −20%#02265A
Darker −30%#011128
Darker −40%#000000
More saturated +25%#004FC2
Less saturated −25%#1D54A5

Channel breakdown

R5
G80
B189
Red5 (2%)
Green80 (31.4%)
Blue189 (74.1%)
Hue215.54°
Saturation (HSL)94.85%
Lightness38.04%
Dominant channelBlue
Hex per channelR 05 · G 50 · B BD

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Every value on this page was computed from “0550bd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.