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Recognised as Colour

#2161AC

  • #2161AC
  • Blue
  • Dark
  • Nearest: Steel blue

#2161AC is a blue with RGB values 33, 97, 172 and HSL 212°, 68%, 40%. It is a dark colour, so white text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#2161AC#2161AC
HEX#2161AC
RGBrgb(33, 97, 172)
RGB (0–1)0.1294, 0.3804, 0.6745
RGB percentages12.9%, 38%, 67.5%
HSLhsl(212.4, 67.8%, 40.2%)
HSV / HSBhsv(212.4, 80.8%, 67.5%)
CMYK80.8%, 43.6%, 0%, 32.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,187,692
CSS custom property--colour: #2161AC;

Brightness & contrast

Relative luminance0.11851WCAG 2.x, 0 is black and 1 is white
Perceived brightness96 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.23:1
Contrast with white6.23:1WCAG normal text: AA
Contrast with black3.37:1WCAG normal text: Fail
Greyscale equivalent#595959
Inverted#DE9E53

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3B67AFno red cones; affects about 1% of men; ΔE 4.1 from the original
Deuteranopia#205BABno green cones; the most common form, about 1% of men; ΔE 4.6 from the original
Tritanopia#00737Eno blue cones; rare, and affects men and women equally; ΔE 44.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.23:1WCAG large text: AAA
Contrast with black, large text3.37:1WCAG large text: AA

Named colours

Steel blue · ΔE 21.3Cornflower blue · ΔE 21.3Dark slateblue · ΔE 21.4Dodgerblue · ΔE 25.6Royal blue · ΔE 27.8Slate blue · ΔE 31.1
Nearest named CSS colourSteel blue (#4682B4)ΔE 21.3, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AC6C21
Analogous#21A7AC, #2621AC
Triadic#AC2161, #61AC21
Split complementary#AC2621, #A7AC21
Tetradic#AC21A7, #AC6C21, #21AC27

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AACAEF
Lighter +30%#7FAFE7
Lighter +20%#5594DE
Lighter +10%#2A79D6
Darker −10%#194981
Darker −20%#113156
Darker −30%#08192C
Darker −40%#000001
More saturated +25%#075FC6
Less saturated −25%#3B6392

Channel breakdown

R33
G97
B172
Red33 (12.9%)
Green97 (38%)
Blue172 (67.5%)
Hue212.37°
Saturation (HSL)67.8%
Lightness40.2%
Dominant channelBlue
Hex per channelR 21 · G 61 · B AC

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Every value on this page was computed from “2161ac” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.