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Colour

#0023AA

  • #0023AA
  • Blue
  • Dark
  • Nearest: Dark blue

#0023AA is a blue with RGB values 0, 35, 170 and HSL 228°, 100%, 33%. It is a dark colour, so white text on it reaches 11.5:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#0023AA#0023AA
HEX#0023AA
RGBrgb(0, 35, 170)
RGB (0–1)0, 0.1373, 0.6667
RGB percentages0%, 13.7%, 66.7%
HSLhsl(227.6, 100%, 33.3%)
HSV / HSBhsv(227.6, 100%, 66.7%)
CMYK100%, 79.4%, 0%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer9,130
CSS custom property--colour: #0023AA;

Brightness & contrast

Relative luminance0.04104WCAG 2.x, 0 is black and 1 is white
Perceived brightness63.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.53:1
Contrast with white11.53:1WCAG normal text: AAA
Contrast with black1.82:1WCAG normal text: Fail
Greyscale equivalent#252525
Inverted#FFDC55

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0041AEno red cones; affects about 1% of men; ΔE 21.4 from the original
Deuteranopia#0031A8no green cones; the most common form, about 1% of men; ΔE 11.2 from the original
Tritanopia#004D66no blue cones; rare, and affects men and women equally; ΔE 76.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.53:1WCAG large text: AAA
Contrast with black, large text1.82:1WCAG large text: Fail

Named colours

Dark blue · ΔE 11.2Navy · ΔE 13.6Indigo · ΔE 20.4Rebecca purple · ΔE 26.8Slate blue · ΔE 27.4Midnight blue · ΔE 27.7
Nearest named CSS colourDark blue (#00008B)ΔE 11.18, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AA8700
Analogous#0078AA, #3200AA
Triadic#AA0023, #23AA00
Split complementary#AA3200, #78AA00
Tetradic#AA0078, #AA8700, #00AA32

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7793FF
Lighter +30%#446BFF
Lighter +20%#1142FF
Lighter +10%#002EDD
Darker −10%#001977
Darker −20%#000E44
Darker −30%#000311
Darker −40%#000000
More saturated +25%#0023AA
Less saturated −25%#153095

Channel breakdown

R0
G35
B170
Red0 (0%)
Green35 (13.7%)
Blue170 (66.7%)
Hue227.65°
Saturation (HSL)100%
Lightness33.33%
Dominant channelBlue
Hex per channelR 00 · G 23 · B AA

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Every value on this page was computed from “0023aa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.