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Recognised as Colour

#0055DC

  • #0055DC
  • Blue
  • Dark
  • Nearest: Royal blue

#0055DC is a blue with RGB values 0, 85, 220 and HSL 217°, 100%, 43%. It is a dark colour, so white text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#0055DC#0055DC
HEX#0055DC
RGBrgb(0, 85, 220)
RGB (0–1)0, 0.3333, 0.8627
RGB percentages0%, 33.3%, 86.3%
HSLhsl(216.8, 100%, 43.1%)
HSV / HSBhsv(216.8, 100%, 86.3%)
CMYK100%, 61.4%, 0%, 13.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer21,980
CSS custom property--colour: #0055DC;

Brightness & contrast

Relative luminance0.11664WCAG 2.x, 0 is black and 1 is white
Perceived brightness98.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.3:1
Contrast with white6.3:1WCAG normal text: AA
Contrast with black3.33:1WCAG normal text: Fail
Greyscale equivalent#4D4D4D
Inverted#FFAA23

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0069E0no red cones; affects about 1% of men; ΔE 14.5 from the original
Deuteranopia#0057D9no green cones; the most common form, about 1% of men; ΔE 3.3 from the original
Tritanopia#007990no blue cones; rare, and affects men and women equally; ΔE 75.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.3:1WCAG large text: AAA
Contrast with black, large text3.33:1WCAG large text: AA

Named colours

Royal blue · ΔE 13.1Medium slateblue · ΔE 16.7Slate blue · ΔE 17.4Medium purple · ΔE 28.3Rebecca purple · ΔE 29.9Dodgerblue · ΔE 31.4
Nearest named CSS colourRoyal blue (#4169E1)ΔE 13.11, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DC8700
Analogous#00C3DC, #1900DC
Triadic#DC0055, #55DC00
Split complementary#DC1900, #C3DC00
Tetradic#DC00C3, #DC8700, #00DC19

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A9CAFF
Lighter +30%#76ABFF
Lighter +20%#438CFF
Lighter +10%#106CFF
Darker −10%#0041A9
Darker −20%#002E76
Darker −30%#001A43
Darker −40%#000610
More saturated +25%#0055DC
Less saturated −25%#1C5BC1

Channel breakdown

R0
G85
B220
Red0 (0%)
Green85 (33.3%)
Blue220 (86.3%)
Hue216.82°
Saturation (HSL)100%
Lightness43.14%
Dominant channelBlue
Hex per channelR 00 · G 55 · B DC

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Every value on this page was computed from “0055dc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.