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Recognised as Colour

#2237BD

  • #2237BD
  • Blue
  • Dark
  • Nearest: Dark blue

#2237BD is a blue with RGB values 34, 55, 189 and HSL 232°, 70%, 44%. It is a dark colour, so white text on it reaches 8.9:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#2237BD#2237BD
HEX#2237BD
RGBrgb(34, 55, 189)
RGB (0–1)0.1333, 0.2157, 0.7412
RGB percentages13.3%, 21.6%, 74.1%
HSLhsl(231.9, 69.5%, 43.7%)
HSV / HSBhsv(231.9, 82%, 74.1%)
CMYK82%, 70.9%, 0%, 25.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,242,493
CSS custom property--colour: #2237BD;

Brightness & contrast

Relative luminance0.06747WCAG 2.x, 0 is black and 1 is white
Perceived brightness78.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.94:1
Contrast with white8.94:1WCAG normal text: AAA
Contrast with black2.35:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#DDC842

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0051C1no red cones; affects about 1% of men; ΔE 19.6 from the original
Deuteranopia#0042BBno green cones; the most common form, about 1% of men; ΔE 10.2 from the original
Tritanopia#005D76no blue cones; rare, and affects men and women equally; ΔE 75.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.94:1WCAG large text: AAA
Contrast with black, large text2.35:1WCAG large text: Fail

Named colours

Dark blue · ΔE 18.9Navy · ΔE 20.4Slate blue · ΔE 20.6Medium slateblue · ΔE 21.9Indigo · ΔE 23.5Royal blue · ΔE 23.5
Nearest named CSS colourDark blue (#00008B)ΔE 18.9, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BDA822
Analogous#2284BD, #5A22BD
Triadic#BD2237, #37BD22
Split complementary#BD5A22, #85BD22
Tetradic#BD2285, #BDA822, #22BD5B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B9C0F2
Lighter +30%#8D9AEB
Lighter +20%#6274E3
Lighter +10%#374DDB
Darker −10%#1A2A92
Darker −20%#121E67
Darker −30%#0B113B
Darker −40%#030510
More saturated +25%#0623D9
Less saturated −25%#3E4BA1

Channel breakdown

R34
G55
B189
Red34 (13.3%)
Green55 (21.6%)
Blue189 (74.1%)
Hue231.87°
Saturation (HSL)69.51%
Lightness43.73%
Dominant channelBlue
Hex per channelR 22 · G 37 · B BD

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Every value on this page was computed from “2237bd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.