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Colour

#223B77

  • #223B77
  • Blue
  • Dark
  • Nearest: Dark slateblue

#223B77 is a blue with RGB values 34, 59, 119 and HSL 222°, 56%, 30%. It is a dark colour, so white text on it reaches 10.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#223B77#223B77
HEX#223B77
RGBrgb(34, 59, 119)
RGB (0–1)0.1333, 0.2314, 0.4667
RGB percentages13.3%, 23.1%, 46.7%
HSLhsl(222.4, 55.6%, 30%)
HSV / HSBhsv(222.4, 71.4%, 46.7%)
CMYK71.4%, 50.4%, 0%, 53.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,243,447
CSS custom property--colour: #223B77;

Brightness & contrast

Relative luminance0.048WCAG 2.x, 0 is black and 1 is white
Perceived brightness63.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.71:1
Contrast with white10.71:1WCAG normal text: AAA
Contrast with black1.96:1WCAG normal text: Fail
Greyscale equivalent#3A3A3A
Inverted#DDC488

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1B4279no red cones; affects about 1% of men; ΔE 5.8 from the original
Deuteranopia#053A76no green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#004953no blue cones; rare, and affects men and women equally; ΔE 38 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.71:1WCAG large text: AAA
Contrast with black, large text1.96:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 15.3Midnight blue · ΔE 25.2Steel blue · ΔE 31.4Rebecca purple · ΔE 32.8Slate blue · ΔE 36.8Cornflower blue · ΔE 37.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 15.3, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#775E22
Analogous#226577, #342277
Triadic#77223B, #3B7722
Split complementary#773422, #657722
Tetradic#772265, #775E22, #227734

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#88A1DD
Lighter +30%#6082D2
Lighter +20%#3962C6
Lighter +10%#2D4F9F
Darker −10%#17274F
Darker −20%#0B1428
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0F338A
Less saturated −25%#354364

Channel breakdown

R34
G59
B119
Red34 (13.3%)
Green59 (23.1%)
Blue119 (46.7%)
Hue222.35°
Saturation (HSL)55.56%
Lightness30%
Dominant channelBlue
Hex per channelR 22 · G 3B · B 77

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Every value on this page was computed from “223b77” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.