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Recognised as Colour

#2101AC

  • #2101AC
  • Blue
  • Dark
  • Nearest: Dark blue

#2101AC is a blue with RGB values 33, 1, 172 and HSL 251°, 99%, 34%. It is a dark colour, so white text on it reaches 12.6:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#2101AC#2101AC
HEX#2101AC
RGBrgb(33, 1, 172)
RGB (0–1)0.1294, 0.0039, 0.6745
RGB percentages12.9%, 0.4%, 67.5%
HSLhsl(251.2, 98.8%, 33.9%)
HSV / HSBhsv(251.2, 99.4%, 67.5%)
CMYK80.8%, 99.4%, 0%, 32.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,163,116
CSS custom property--colour: #2101AC;

Brightness & contrast

Relative luminance0.03324WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.61:1
Contrast with white12.61:1WCAG normal text: AAA
Contrast with black1.66:1WCAG normal text: Fail
Greyscale equivalent#141414
Inverted#DEFE53

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003AB0no red cones; affects about 1% of men; ΔE 29.6 from the original
Deuteranopia#002BAAno green cones; the most common form, about 1% of men; ΔE 20.8 from the original
Tritanopia#004563no blue cones; rare, and affects men and women equally; ΔE 86.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.61:1WCAG large text: AAA
Contrast with black, large text1.66:1WCAG large text: Fail

Named colours

Dark blue · ΔE 14.3Medium blue · ΔE 16.1Navy · ΔE 19.5Blue violet · ΔE 23.7Indigo · ΔE 25.8Dark violet · ΔE 26.2
Nearest named CSS colourDark blue (#00008B)ΔE 14.35, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8CAC01
Analogous#0137AC, #7701AC
Triadic#AC2101, #01AC21
Split complementary#AC7601, #37AC01
Tetradic#AC0137, #8CAC01, #01AC76

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#937BFE
Lighter +30%#6A48FE
Lighter +20%#4115FE
Lighter +10%#2B01DF
Darker −10%#170179
Darker −20%#0E0047
Darker −30%#040014
Darker −40%#000000
More saturated +25%#2000AD
Less saturated −25%#2F1796

Channel breakdown

R33
G1
B172
Red33 (12.9%)
Green1 (0.4%)
Blue172 (67.5%)
Hue251.23°
Saturation (HSL)98.84%
Lightness33.92%
Dominant channelBlue
Hex per channelR 21 · G 01 · B AC

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Every value on this page was computed from “2101ac” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.