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Recognised as Colour

#223B8D

  • #223B8D
  • Blue
  • Dark
  • Nearest: Dark slateblue

#223B8D is a blue with RGB values 34, 59, 141 and HSL 226°, 61%, 34%. 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

#223B8D#223B8D
HEX#223B8D
RGBrgb(34, 59, 141)
RGB (0–1)0.1333, 0.2314, 0.5529
RGB percentages13.3%, 23.1%, 55.3%
HSLhsl(226, 61.1%, 34.3%)
HSV / HSBhsv(226, 75.9%, 55.3%)
CMYK75.9%, 58.2%, 0%, 44.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,243,469
CSS custom property--colour: #223B8D;

Brightness & contrast

Relative luminance0.05391WCAG 2.x, 0 is black and 1 is white
Perceived brightness68.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.1:1
Contrast with white10.1:1WCAG normal text: AAA
Contrast with black2.08:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#DDC472

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004790no red cones; affects about 1% of men; ΔE 10.6 from the original
Deuteranopia#003D8Bno green cones; the most common form, about 1% of men; ΔE 5 from the original
Tritanopia#004F5Eno blue cones; rare, and affects men and women equally; ΔE 49.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.1:1WCAG large text: AAA
Contrast with black, large text2.08:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 8.6Midnight blue · ΔE 16.1Rebecca purple · ΔE 22.5Slate blue · ΔE 24.9Royal blue · ΔE 26.7Medium purple · ΔE 31.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 8.56, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8D7422
Analogous#22708D, #3F228D
Triadic#8D223B, #3B8D22
Split complementary#8D3F22, #708D22
Tetradic#8D2270, #8D7422, #228D3F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#95A8E6
Lighter +30%#6C86DC
Lighter +20%#4365D2
Lighter +10%#2C4CB6
Darker −10%#182A64
Darker −20%#0E193B
Darker −30%#040712
Darker −40%#000000
More saturated +25%#0C2FA3
Less saturated −25%#384777

Channel breakdown

R34
G59
B141
Red34 (13.3%)
Green59 (23.1%)
Blue141 (55.3%)
Hue225.98°
Saturation (HSL)61.14%
Lightness34.31%
Dominant channelBlue
Hex per channelR 22 · G 3B · B 8D

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Every value on this page was computed from “223b8d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.