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Colour

#223CA3

  • #223CA3
  • Blue
  • Dark
  • Nearest: Dark slateblue

#223CA3 is a blue with RGB values 34, 60, 163 and HSL 228°, 65%, 39%. It is a dark colour, so white text on it reaches 9.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#223CA3#223CA3
HEX#223CA3
RGBrgb(34, 60, 163)
RGB (0–1)0.1333, 0.2353, 0.6392
RGB percentages13.3%, 23.5%, 63.9%
HSLhsl(227.9, 65.5%, 38.6%)
HSV / HSBhsv(227.9, 79.1%, 63.9%)
CMYK79.1%, 63.2%, 0%, 36.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,243,747
CSS custom property--colour: #223CA3;

Brightness & contrast

Relative luminance0.06216WCAG 2.x, 0 is black and 1 is white
Perceived brightness74.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.36:1
Contrast with white9.36:1WCAG normal text: AAA
Contrast with black2.24:1WCAG normal text: Fail
Greyscale equivalent#3E3E3E
Inverted#DDC35C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004DA6no red cones; affects about 1% of men; ΔE 14.1 from the original
Deuteranopia#0041A1no green cones; the most common form, about 1% of men; ΔE 6.6 from the original
Tritanopia#005769no blue cones; rare, and affects men and women equally; ΔE 60.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.36:1WCAG large text: AAA
Contrast with black, large text2.24:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 16.5Midnight blue · ΔE 16.8Slate blue · ΔE 17Rebecca purple · ΔE 18.1Royal blue · ΔE 19.4Indigo · ΔE 25.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.45, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A38922
Analogous#227CA3, #4922A3
Triadic#A3223C, #3CA322
Split complementary#A34922, #7CA322
Tetradic#A3227C, #A38922, #22A349

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A5B3EC
Lighter +30%#7B90E3
Lighter +20%#506CDB
Lighter +10%#2B4CCD
Darker −10%#192C79
Darker −20%#101D4F
Darker −30%#080D24
Darker −40%#000000
More saturated +25%#092DBC
Less saturated −25%#3B4B8A

Channel breakdown

R34
G60
B163
Red34 (13.3%)
Green60 (23.5%)
Blue163 (63.9%)
Hue227.91°
Saturation (HSL)65.48%
Lightness38.63%
Dominant channelBlue
Hex per channelR 22 · G 3C · B A3

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Every value on this page was computed from “223ca3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.