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Recognised as Colour

#2900AB

  • #2900AB
  • Blue
  • Dark
  • Nearest: Dark blue

#2900AB is a blue with RGB values 41, 0, 171 and HSL 254°, 100%, 34%. It is a dark colour, so white text on it reaches 12.5:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#2900AB#2900AB
HEX#2900AB
RGBrgb(41, 0, 171)
RGB (0–1)0.1608, 0, 0.6706
RGB percentages16.1%, 0%, 67.1%
HSLhsl(254.4, 100%, 33.5%)
HSV / HSBhsv(254.4, 100%, 67.1%)
CMYK76%, 100%, 0%, 32.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,687,147
CSS custom property--colour: #2900AB;

Brightness & contrast

Relative luminance0.03412WCAG 2.x, 0 is black and 1 is white
Perceived brightness61.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.48:1
Contrast with white12.48:1WCAG normal text: AAA
Contrast with black1.68:1WCAG normal text: Fail
Greyscale equivalent#151515
Inverted#D6FF54

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003AAFno red cones; affects about 1% of men; ΔE 29.7 from the original
Deuteranopia#002CA9no green cones; the most common form, about 1% of men; ΔE 21.6 from the original
Tritanopia#004463no blue cones; rare, and affects men and women equally; ΔE 84.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.48:1WCAG large text: AAA
Contrast with black, large text1.68:1WCAG large text: Fail

Named colours

Dark blue · ΔE 13.9Medium blue · ΔE 16.9Navy · ΔE 19Blue violet · ΔE 23.2Indigo · ΔE 24.8Dark violet · ΔE 25.6
Nearest named CSS colourDark blue (#00008B)ΔE 13.92, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#82AB00
Analogous#002DAB, #7E00AB
Triadic#AB2900, #00AB29
Split complementary#AB7E00, #2DAB00
Tetradic#AB002D, #82AB00, #00AB7E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9878FF
Lighter +30%#7245FF
Lighter +20%#4B12FF
Lighter +10%#3500DE
Darker −10%#1D0078
Darker −20%#110045
Darker −30%#040012
Darker −40%#000000
More saturated +25%#2900AB
Less saturated −25%#341596

Channel breakdown

R41
G0
B171
Red41 (16.1%)
Green0 (0%)
Blue171 (67.1%)
Hue254.39°
Saturation (HSL)100%
Lightness33.53%
Dominant channelBlue
Hex per channelR 29 · G 00 · B AB

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Every value on this page was computed from “2900ab” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.