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Recognised as Colour

#3A55DB

  • #3A55DB
  • Blue
  • Dark
  • Nearest: Royal blue

#3A55DB is a blue with RGB values 58, 85, 219 and HSL 230°, 69%, 54%. It is a dark colour, so white text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#3A55DB#3A55DB
HEX#3A55DB
RGBrgb(58, 85, 219)
RGB (0–1)0.2275, 0.3333, 0.8588
RGB percentages22.7%, 33.3%, 85.9%
HSLhsl(229.9, 69.1%, 54.3%)
HSV / HSBhsv(229.9, 73.5%, 85.9%)
CMYK73.5%, 61.2%, 0%, 14.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,823,067
CSS custom property--colour: #3A55DB;

Brightness & contrast

Relative luminance0.12511WCAG 2.x, 0 is black and 1 is white
Perceived brightness103.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6:1
Contrast with white6:1WCAG normal text: AA
Contrast with black3.5:1WCAG normal text: Fail
Greyscale equivalent#595959
Inverted#C5AA24

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006BDFno red cones; affects about 1% of men; ΔE 17.8 from the original
Deuteranopia#005CD8no green cones; the most common form, about 1% of men; ΔE 9.5 from the original
Tritanopia#007790no blue cones; rare, and affects men and women equally; ΔE 74 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6:1WCAG large text: AAA
Contrast with black, large text3.5:1WCAG large text: AA

Named colours

Royal blue · ΔE 12.8Medium slateblue · ΔE 12.8Slate blue · ΔE 14Medium purple · ΔE 24.9Rebecca purple · ΔE 26.8Dark blue · ΔE 31
Nearest named CSS colourRoyal blue (#4169E1)ΔE 12.77, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DBC03A
Analogous#3AA6DB, #6F3ADB
Triadic#DB3A55, #55DB3A
Split complementary#DB703A, #A5DB3A
Tetradic#DB3AA6, #DBC03A, #3ADB70

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E6EAFB
Lighter +30%#BBC5F3
Lighter +20%#909FEB
Lighter +10%#657AE3
Darker −10%#233DBF
Darker −20%#1B2F94
Darker −30%#132269
Darker −40%#0B143E
More saturated +25%#1D42F8
Less saturated −25%#5768BE

Channel breakdown

R58
G85
B219
Red58 (22.7%)
Green85 (33.3%)
Blue219 (85.9%)
Hue229.94°
Saturation (HSL)69.1%
Lightness54.31%
Dominant channelBlue
Hex per channelR 3A · G 55 · B DB

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Every value on this page was computed from “3a55db” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.