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Recognised as Colour

#0066DC

  • #0066DC
  • Blue
  • Dark
  • Nearest: Royal blue

#0066DC is a blue with RGB values 0, 102, 220 and HSL 212°, 100%, 43%. It is a dark colour, so white text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#0066DC#0066DC
HEX#0066DC
RGBrgb(0, 102, 220)
RGB (0–1)0, 0.4, 0.8627
RGB percentages0%, 40%, 86.3%
HSLhsl(212.2, 100%, 43.1%)
HSV / HSBhsv(212.2, 100%, 86.3%)
CMYK100%, 53.6%, 0%, 13.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer26,332
CSS custom property--colour: #0066DC;

Brightness & contrast

Relative luminance0.1467WCAG 2.x, 0 is black and 1 is white
Perceived brightness107.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.34:1
Contrast with white5.34:1WCAG normal text: AA
Contrast with black3.93:1WCAG normal text: Fail
Greyscale equivalent#595959
Inverted#FF9923

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0074E0no red cones; affects about 1% of men; ΔE 9.6 from the original
Deuteranopia#0062DAno green cones; the most common form, about 1% of men; ΔE 2.4 from the original
Tritanopia#008497no blue cones; rare, and affects men and women equally; ΔE 65.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.34:1WCAG large text: AAA
Contrast with black, large text3.93:1WCAG large text: AA

Named colours

Royal blue · ΔE 5.5Slate blue · ΔE 17Dodgerblue · ΔE 18.7Medium slateblue · ΔE 20.7Medium purple · ΔE 24.6Cornflower blue · ΔE 27.2
Nearest named CSS colourRoyal blue (#4169E1)ΔE 5.54, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DC7600
Analogous#00D4DC, #0800DC
Triadic#DC0066, #66DC00
Split complementary#DC0800, #D4DC00
Tetradic#DC00D4, #DC7600, #00DC08

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A9D1FF
Lighter +30%#76B6FF
Lighter +20%#439AFF
Lighter +10%#107FFF
Darker −10%#004EA9
Darker −20%#003776
Darker −30%#001F43
Darker −40%#000710
More saturated +25%#0066DC
Less saturated −25%#1C68C1

Channel breakdown

R0
G102
B220
Red0 (0%)
Green102 (40%)
Blue220 (86.3%)
Hue212.18°
Saturation (HSL)100%
Lightness43.14%
Dominant channelBlue
Hex per channelR 00 · G 66 · B DC

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Every value on this page was computed from “0066dc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.