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Colour

#0055CD

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

#0055CD is a blue with RGB values 0, 85, 205 and HSL 215°, 100%, 40%. It is a dark colour, so white text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#0055CD#0055CD
HEX#0055CD
RGBrgb(0, 85, 205)
RGB (0–1)0, 0.3333, 0.8039
RGB percentages0%, 33.3%, 80.4%
HSLhsl(215.1, 100%, 40.2%)
HSV / HSBhsv(215.1, 100%, 80.4%)
CMYK100%, 58.5%, 0%, 19.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer21,965
CSS custom property--colour: #0055CD;

Brightness & contrast

Relative luminance0.10905WCAG 2.x, 0 is black and 1 is white
Perceived brightness95 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.6:1
Contrast with white6.6:1WCAG normal text: AA
Contrast with black3.18:1WCAG normal text: Fail
Greyscale equivalent#4C4C4C
Inverted#FFAA32

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0066D1no red cones; affects about 1% of men; ΔE 12.2 from the original
Deuteranopia#0055CBno green cones; the most common form, about 1% of men; ΔE 1.2 from the original
Tritanopia#007489no blue cones; rare, and affects men and women equally; ΔE 67.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.6:1WCAG large text: AAA
Contrast with black, large text3.18:1WCAG large text: AA

Named colours

Royal blue · ΔE 8.8Slate blue · ΔE 14.7Medium slateblue · ΔE 19.2Medium purple · ΔE 25.4Dodgerblue · ΔE 26.5Rebecca purple · ΔE 26.8
Nearest named CSS colourRoyal blue (#4169E1)ΔE 8.75, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CD7800
Analogous#00BBCD, #1100CD
Triadic#CD0055, #55CD00
Split complementary#CD1200, #BBCD00
Tetradic#CD00BC, #CD7800, #00CD12

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9AC4FF
Lighter +30%#67A6FF
Lighter +20%#3488FF
Lighter +10%#016AFF
Darker −10%#00409A
Darker −20%#002B67
Darker −30%#001634
Darker −40%#000001
More saturated +25%#0055CD
Less saturated −25%#1A59B3

Channel breakdown

R0
G85
B205
Red0 (0%)
Green85 (33.3%)
Blue205 (80.4%)
Hue215.12°
Saturation (HSL)100%
Lightness40.2%
Dominant channelBlue
Hex per channelR 00 · G 55 · B CD

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