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Recognised as Colour

#2183BE

  • #2183BE
  • Blue
  • Dark
  • Nearest: Steel blue

#2183BE is a blue with RGB values 33, 131, 190 and HSL 203°, 70%, 44%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#2183BE#2183BE
HEX#2183BE
RGBrgb(33, 131, 190)
RGB (0–1)0.1294, 0.5137, 0.7451
RGB percentages12.9%, 51.4%, 74.5%
HSLhsl(202.5, 70.4%, 43.7%)
HSV / HSBhsv(202.5, 82.6%, 74.5%)
CMYK82.6%, 31.1%, 0%, 25.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,196,414
CSS custom property--colour: #2183BE;

Brightness & contrast

Relative luminance0.20274WCAG 2.x, 0 is black and 1 is white
Perceived brightness120.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.05:1
Contrast with white4.15:1WCAG normal text: Fail
Contrast with black5.05:1WCAG normal text: AA
Greyscale equivalent#727272
Inverted#DE7C41

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6784C1no red cones; affects about 1% of men; ΔE 13.5 from the original
Deuteranopia#5276BDno green cones; the most common form, about 1% of men; ΔE 15.4 from the original
Tritanopia#009298no blue cones; rare, and affects men and women equally; ΔE 35.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.15:1WCAG large text: AA
Contrast with black, large text5.05:1WCAG large text: AAA

Named colours

Steel blue · ΔE 6.7Cornflower blue · ΔE 21.4Deep skyblue · ΔE 23.6Light slate grey · ΔE 28Slate grey · ΔE 28.3Light skyblue · ΔE 29.7
Nearest named CSS colourSteel blue (#4682B4)ΔE 6.74, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BE5C21
Analogous#21BEAB, #2134BE
Triadic#BE2183, #83BE21
Split complementary#BE2134, #BEAB21
Tetradic#AB21BE, #BE5C21, #34BE21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B8DDF3
Lighter +30%#8DC8EB
Lighter +20%#61B3E4
Lighter +10%#369EDC
Darker −10%#196593
Darker −20%#124767
Darker −30%#0A293C
Darker −40%#030B10
More saturated +25%#058ADA
Less saturated −25%#3D7CA2

Channel breakdown

R33
G131
B190
Red33 (12.9%)
Green131 (51.4%)
Blue190 (74.5%)
Hue202.55°
Saturation (HSL)70.4%
Lightness43.73%
Dominant channelBlue
Hex per channelR 21 · G 83 · B BE

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Every value on this page was computed from “2183be” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.