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Recognised as Colour

#02123F

  • #02123F
  • Blue
  • Dark
  • Nearest: Midnight blue

#02123F is a blue with RGB values 2, 18, 63 and HSL 224°, 94%, 13%. It is a dark colour, so white text on it reaches 18.1:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#02123F#02123F
HEX#02123F
RGBrgb(2, 18, 63)
RGB (0–1)0.0078, 0.0706, 0.2471
RGB percentages0.8%, 7.1%, 24.7%
HSLhsl(224.3, 93.8%, 12.7%)
HSV / HSBhsv(224.3, 96.8%, 24.7%)
CMYK96.8%, 71.4%, 0%, 75.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer135,743
CSS custom property--colour: #02123F;

Brightness & contrast

Relative luminance0.00804WCAG 2.x, 0 is black and 1 is white
Perceived brightness25.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.09:1
Contrast with white18.09:1WCAG normal text: AAA
Contrast with black1.16:1WCAG normal text: Fail
Greyscale equivalent#121212
Inverted#FDEDC0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001940no red cones; affects about 1% of men; ΔE 6.6 from the original
Deuteranopia#00133Eno green cones; the most common form, about 1% of men; ΔE 1.8 from the original
Tritanopia#001E26no blue cones; rare, and affects men and women equally; ΔE 31 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.09:1WCAG large text: AAA
Contrast with black, large text1.16:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 27.3Dark slateblue · ΔE 28.8Black · ΔE 34.4Rebecca purple · ΔE 42Dark slate grey · ΔE 44.3Indigo · ΔE 45.9
Nearest named CSS colourMidnight blue (#191970)ΔE 27.32, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3F2F02
Analogous#02313F, #10023F
Triadic#3F0212, #123F02
Split complementary#3F1002, #313F02
Tetradic#3F0231, #3F2F02, #023F10

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1551F8
Lighter +30%#073CD3
Lighter +20%#052EA2
Lighter +10%#042070
Darker −10%#00040E
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001141
Less saturated −25%#0A1637

Channel breakdown

R2
G18
B63
Red2 (0.8%)
Green18 (7.1%)
Blue63 (24.7%)
Hue224.26°
Saturation (HSL)93.85%
Lightness12.75%
Dominant channelBlue
Hex per channelR 02 · G 12 · B 3F

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Every value on this page was computed from “02123f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.