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Recognised as Colour

#223A91

  • #223A91
  • Blue
  • Dark
  • Nearest: Dark slateblue

#223A91 is a blue with RGB values 34, 58, 145 and HSL 227°, 62%, 35%. It is a dark colour, so white text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#223A91#223A91
HEX#223A91
RGBrgb(34, 58, 145)
RGB (0–1)0.1333, 0.2275, 0.5686
RGB percentages13.3%, 22.7%, 56.9%
HSLhsl(227, 62%, 35.1%)
HSV / HSBhsv(227, 76.6%, 56.9%)
CMYK76.6%, 60%, 0%, 43.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,243,217
CSS custom property--colour: #223A91;

Brightness & contrast

Relative luminance0.05411WCAG 2.x, 0 is black and 1 is white
Perceived brightness68.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.09:1
Contrast with white10.09:1WCAG normal text: AAA
Contrast with black2.08:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#DDC56E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004794no red cones; affects about 1% of men; ΔE 11.3 from the original
Deuteranopia#003D8Fno green cones; the most common form, about 1% of men; ΔE 5.6 from the original
Tritanopia#00505Fno blue cones; rare, and affects men and women equally; ΔE 52.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.09:1WCAG large text: AAA
Contrast with black, large text2.08:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 9.5Midnight blue · ΔE 14.7Rebecca purple · ΔE 20.6Slate blue · ΔE 22.8Royal blue · ΔE 24.9Indigo · ΔE 29.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 9.52, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#917922
Analogous#227191, #422291
Triadic#91223A, #3A9122
Split complementary#914222, #729122
Tetradic#912271, #917922, #229142

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#98A9E7
Lighter +30%#6F87DD
Lighter +20%#4564D4
Lighter +10%#2C4BBA
Darker −10%#182968
Darker −20%#0F193E
Darker −30%#050815
Darker −40%#000000
More saturated +25%#0C2DA7
Less saturated −25%#38477B

Channel breakdown

R34
G58
B145
Red34 (13.3%)
Green58 (22.7%)
Blue145 (56.9%)
Hue227.03°
Saturation (HSL)62.01%
Lightness35.1%
Dominant channelBlue
Hex per channelR 22 · G 3A · B 91

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Every value on this page was computed from “223a91” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.