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Colour

#002B81

  • #002B81
  • Blue
  • Dark
  • Nearest: Midnight blue

#002B81 is a blue with RGB values 0, 43, 129 and HSL 220°, 100%, 25%. It is a dark colour, so white text on it reaches 12.6:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#002B81#002B81
HEX#002B81
RGBrgb(0, 43, 129)
RGB (0–1)0, 0.1686, 0.5059
RGB percentages0%, 16.9%, 50.6%
HSLhsl(220, 100%, 25.3%)
HSV / HSBhsv(220, 100%, 50.6%)
CMYK100%, 66.7%, 0%, 49.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,137
CSS custom property--colour: #002B81;

Brightness & contrast

Relative luminance0.03313WCAG 2.x, 0 is black and 1 is white
Perceived brightness54.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.63:1
Contrast with white12.63:1WCAG normal text: AAA
Contrast with black1.66:1WCAG normal text: Fail
Greyscale equivalent#282828
Inverted#FFD47E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003984no red cones; affects about 1% of men; ΔE 11 from the original
Deuteranopia#002D7Fno green cones; the most common form, about 1% of men; ΔE 3 from the original
Tritanopia#004252no blue cones; rare, and affects men and women equally; ΔE 52 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.63:1WCAG large text: AAA
Contrast with black, large text1.66:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 9.2Dark slateblue · ΔE 13.6Rebecca purple · ΔE 22.2Indigo · ΔE 27.2Slate blue · ΔE 27.4Navy · ΔE 27.7
Nearest named CSS colourMidnight blue (#191970)ΔE 9.18, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#815600
Analogous#006C81, #160081
Triadic#81002B, #2B8100
Split complementary#811500, #6B8100
Tetradic#81006B, #815600, #008115

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4E89FF
Lighter +30%#1B67FF
Lighter +20%#004DE7
Lighter +10%#003CB4
Darker −10%#001A4E
Darker −20%#00091B
Darker −30%#000000
Darker −40%#000000
More saturated +25%#002B81
Less saturated −25%#103071

Channel breakdown

R0
G43
B129
Red0 (0%)
Green43 (16.9%)
Blue129 (50.6%)
Hue220°
Saturation (HSL)100%
Lightness25.29%
Dominant channelBlue
Hex per channelR 00 · G 2B · B 81

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Every value on this page was computed from “002b81” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.