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Recognised as Colour

#355EB3

  • #355EB3
  • Blue
  • Dark
  • Nearest: Dark slateblue

#355EB3 is a blue with RGB values 53, 94, 179 and HSL 220°, 54%, 45%. It is a dark colour, so white text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#355EB3#355EB3
HEX#355EB3
RGBrgb(53, 94, 179)
RGB (0–1)0.2078, 0.3686, 0.702
RGB percentages20.8%, 36.9%, 70.2%
HSLhsl(220.5, 54.3%, 45.5%)
HSV / HSBhsv(220.5, 70.4%, 70.2%)
CMYK70.4%, 47.5%, 0%, 29.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,497,651
CSS custom property--colour: #355EB3;

Brightness & contrast

Relative luminance0.12017WCAG 2.x, 0 is black and 1 is white
Perceived brightness98.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.17:1
Contrast with white6.17:1WCAG normal text: AA
Contrast with black3.4:1WCAG normal text: Fail
Greyscale equivalent#5B5B5B
Inverted#CAA14C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3167B6no red cones; affects about 1% of men; ΔE 6.3 from the original
Deuteranopia#135CB1no green cones; the most common form, about 1% of men; ΔE 3.9 from the original
Tritanopia#007280no blue cones; rare, and affects men and women equally; ΔE 50 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.17:1WCAG large text: AAA
Contrast with black, large text3.4:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 17Royal blue · ΔE 20.6Cornflower blue · ΔE 21.4Slate blue · ΔE 23.2Dodgerblue · ΔE 23.4Medium purple · ΔE 25.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.99, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B38A35
Analogous#359DB3, #4B35B3
Triadic#B3355E, #5EB335
Split complementary#B34B35, #9DB335
Tetradic#B3359D, #B38A35, #35B34B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C6D3EE
Lighter +30%#9FB5E2
Lighter +20%#7796D7
Lighter +10%#5078CB
Darker −10%#29498C
Darker −20%#1E3564
Darker −30%#12203D
Darker −40%#060B16
More saturated +25%#1854D0
Less saturated −25%#526896

Channel breakdown

R53
G94
B179
Red53 (20.8%)
Green94 (36.9%)
Blue179 (70.2%)
Hue220.48°
Saturation (HSL)54.31%
Lightness45.49%
Dominant channelBlue
Hex per channelR 35 · G 5E · B B3

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Every value on this page was computed from “355eb3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.