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Recognised as Colour

#2B01AA

  • #2B01AA
  • Blue
  • Dark
  • Nearest: Dark blue

#2B01AA is a blue with RGB values 43, 1, 170 and HSL 255°, 99%, 34%. It is a dark colour, so white text on it reaches 12.4:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#2B01AA#2B01AA
HEX#2B01AA
RGBrgb(43, 1, 170)
RGB (0–1)0.1686, 0.0039, 0.6667
RGB percentages16.9%, 0.4%, 66.7%
HSLhsl(254.9, 98.8%, 33.5%)
HSV / HSBhsv(254.9, 99.4%, 66.7%)
CMYK74.7%, 99.4%, 0%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,818,474
CSS custom property--colour: #2B01AA;

Brightness & contrast

Relative luminance0.03438WCAG 2.x, 0 is black and 1 is white
Perceived brightness62 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.44:1
Contrast with white12.44:1WCAG normal text: AAA
Contrast with black1.69:1WCAG normal text: Fail
Greyscale equivalent#161616
Inverted#D4FE55

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003AAEno red cones; affects about 1% of men; ΔE 29.5 from the original
Deuteranopia#002DA8no green cones; the most common form, about 1% of men; ΔE 22.2 from the original
Tritanopia#004462no blue cones; rare, and affects men and women equally; ΔE 84.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.44:1WCAG large text: AAA
Contrast with black, large text1.69:1WCAG large text: Fail

Named colours

Dark blue · ΔE 13.2Medium blue · ΔE 17.8Navy · ΔE 18.3Blue violet · ΔE 23.2Indigo · ΔE 23.9Dark violet · ΔE 25.6
Nearest named CSS colourDark blue (#00008B)ΔE 13.25, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#80AA01
Analogous#012BAA, #8001AA
Triadic#AA2B01, #01AA2B
Split complementary#AA8001, #2BAA01
Tetradic#AA012B, #80AA01, #01AA80

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9A79FE
Lighter +30%#7446FE
Lighter +20%#4E13FE
Lighter +10%#3801DD
Darker −10%#1E0177
Darker −20%#110045
Darker −30%#050012
Darker −40%#000000
More saturated +25%#2A00AB
Less saturated −25%#361695

Channel breakdown

R43
G1
B170
Red43 (16.9%)
Green1 (0.4%)
Blue170 (66.7%)
Hue254.91°
Saturation (HSL)98.83%
Lightness33.53%
Dominant channelBlue
Hex per channelR 2B · G 01 · B AA

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Every value on this page was computed from “2b01aa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.