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Recognised as Colour

#2179B1

  • #2179B1
  • Blue
  • Dark
  • Nearest: Steel blue

#2179B1 is a blue with RGB values 33, 121, 177 and HSL 203°, 69%, 41%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#2179B1#2179B1
HEX#2179B1
RGBrgb(33, 121, 177)
RGB (0–1)0.1294, 0.4745, 0.6941
RGB percentages12.9%, 47.5%, 69.4%
HSLhsl(203.3, 68.6%, 41.2%)
HSV / HSBhsv(203.3, 81.4%, 69.4%)
CMYK81.4%, 31.6%, 0%, 30.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,193,841
CSS custom property--colour: #2179B1;

Brightness & contrast

Relative luminance0.17172WCAG 2.x, 0 is black and 1 is white
Perceived brightness111.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.74:1
Contrast with white4.74:1WCAG normal text: AA
Contrast with black4.43:1WCAG normal text: Fail
Greyscale equivalent#6A6A6A
Inverted#DE864E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5F7AB3no red cones; affects about 1% of men; ΔE 12.2 from the original
Deuteranopia#4B6DB0no green cones; the most common form, about 1% of men; ΔE 14 from the original
Tritanopia#00878Dno blue cones; rare, and affects men and women equally; ΔE 33.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.74:1WCAG large text: AAA
Contrast with black, large text4.43:1WCAG large text: AA

Named colours

Steel blue · ΔE 6.2Cornflower blue · ΔE 23.5Slate grey · ΔE 26.8Light slate grey · ΔE 26.9Deep skyblue · ΔE 27.6Dodgerblue · ΔE 32.6
Nearest named CSS colourSteel blue (#4682B4)ΔE 6.23, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B15921
Analogous#21B1A1, #2131B1
Triadic#B12179, #79B121
Split complementary#B12131, #B1A121
Tetradic#A121B1, #B15921, #31B121

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AED6F0
Lighter +30%#83C1E8
Lighter +20%#58ABE0
Lighter +10%#2D95D8
Darker −10%#195C86
Darker −20%#113E5B
Darker −30%#092130
Darker −40%#010305
More saturated +25%#077FCB
Less saturated −25%#3B7397

Channel breakdown

R33
G121
B177
Red33 (12.9%)
Green121 (47.5%)
Blue177 (69.4%)
Hue203.33°
Saturation (HSL)68.57%
Lightness41.18%
Dominant channelBlue
Hex per channelR 21 · G 79 · B B1

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Every value on this page was computed from “2179b1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.