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Recognised as Colour

#0553A3

  • #0553A3
  • Blue
  • Dark
  • Nearest: Dark slateblue

#0553A3 is a blue with RGB values 5, 83, 163 and HSL 210°, 94%, 33%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#0553A3#0553A3
HEX#0553A3
RGBrgb(5, 83, 163)
RGB (0–1)0.0196, 0.3255, 0.6392
RGB percentages2%, 32.5%, 63.9%
HSLhsl(210.4, 94%, 32.9%)
HSV / HSBhsv(210.4, 96.9%, 63.9%)
CMYK96.9%, 49.1%, 0%, 36.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer349,091
CSS custom property--colour: #0553A3;

Brightness & contrast

Relative luminance0.08863WCAG 2.x, 0 is black and 1 is white
Perceived brightness84.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.57:1
Contrast with white7.57:1WCAG normal text: AAA
Contrast with black2.77:1WCAG normal text: Fail
Greyscale equivalent#484848
Inverted#FAAC5C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#225BA6no red cones; affects about 1% of men; ΔE 5 from the original
Deuteranopia#004EA1no green cones; the most common form, about 1% of men; ΔE 3.3 from the original
Tritanopia#006773no blue cones; rare, and affects men and women equally; ΔE 47.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.57:1WCAG large text: AAA
Contrast with black, large text2.77:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 17Royal blue · ΔE 25.3Cornflower blue · ΔE 26.3Dodgerblue · ΔE 27.8Slate blue · ΔE 28Steel blue · ΔE 28.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.02, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A35505
Analogous#05A2A3, #0605A3
Triadic#A30553, #53A305
Split complementary#A30605, #A2A305
Tetradic#A305A2, #A35505, #05A306

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#79B9FB
Lighter +30%#489FF9
Lighter +20%#1686F8
Lighter +10%#076CD4
Darker −10%#033A72
Darker −20%#022140
Darker −30%#00070F
Darker −40%#000000
More saturated +25%#0053A8
Less saturated −25%#1A538E

Channel breakdown

R5
G83
B163
Red5 (2%)
Green83 (32.5%)
Blue163 (63.9%)
Hue210.38°
Saturation (HSL)94.05%
Lightness32.94%
Dominant channelBlue
Hex per channelR 05 · G 53 · B A3

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Every value on this page was computed from “0553a3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.