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Colour

#23148B

  • #23148B
  • Blue
  • Dark
  • Nearest: Navy

#23148B is a blue with RGB values 35, 20, 139 and HSL 248°, 75%, 31%. It is a dark colour, so white text on it reaches 13.6:1 contrast (AAA for normal text). The nearest named colour is Navy.

Colour values

#23148B#23148B
HEX#23148B
RGBrgb(35, 20, 139)
RGB (0–1)0.1373, 0.0784, 0.5451
RGB percentages13.7%, 7.8%, 54.5%
HSLhsl(247.6, 74.8%, 31.2%)
HSV / HSBhsv(247.6, 85.6%, 54.5%)
CMYK74.8%, 85.6%, 0%, 45.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,299,019
CSS custom property--colour: #23148B;

Brightness & contrast

Relative luminance0.02722WCAG 2.x, 0 is black and 1 is white
Perceived brightness52.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.6:1
Contrast with white13.6:1WCAG normal text: AAA
Contrast with black1.54:1WCAG normal text: Fail
Greyscale equivalent#202020
Inverted#DCEB74

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00338Eno red cones; affects about 1% of men; ΔE 22 from the original
Deuteranopia#002889no green cones; the most common form, about 1% of men; ΔE 15.4 from the original
Tritanopia#003B52no blue cones; rare, and affects men and women equally; ΔE 67.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text13.6:1WCAG large text: AAA
Contrast with black, large text1.54:1WCAG large text: Fail

Named colours

Navy · ΔE 7.4Dark blue · ΔE 10.2Indigo · ΔE 11.4Midnight blue · ΔE 17.7Rebecca purple · ΔE 20.3Slate blue · ΔE 28
Nearest named CSS colourNavy (#000080)ΔE 7.4, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7C8B14
Analogous#14408B, #5F148B
Triadic#8B2314, #148B23
Split complementary#8B5F14, #408B14
Tetradic#8B1440, #7C8B14, #148B5F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8C7EED
Lighter +30%#6552E6
Lighter +20%#3D25E0
Lighter +10%#2E1AB8
Darker −10%#180E5E
Darker −20%#0D0732
Darker −30%#010105
Darker −40%#000000
More saturated +25%#14009F
Less saturated −25%#322877

Channel breakdown

R35
G20
B139
Red35 (13.7%)
Green20 (7.8%)
Blue139 (54.5%)
Hue247.56°
Saturation (HSL)74.84%
Lightness31.18%
Dominant channelBlue
Hex per channelR 23 · G 14 · B 8B

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Every value on this page was computed from “23148b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.