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Recognised as Colour

#225DB4

  • #225DB4
  • Blue
  • Dark
  • Nearest: Dark slateblue

#225DB4 is a blue with RGB values 34, 93, 180 and HSL 216°, 68%, 42%. It is a dark colour, so white text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#225DB4#225DB4
HEX#225DB4
RGBrgb(34, 93, 180)
RGB (0–1)0.1333, 0.3647, 0.7059
RGB percentages13.3%, 36.5%, 70.6%
HSLhsl(215.8, 68.2%, 42%)
HSV / HSBhsv(215.8, 81.1%, 70.6%)
CMYK81.1%, 48.3%, 0%, 29.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,252,212
CSS custom property--colour: #225DB4;

Brightness & contrast

Relative luminance0.11464WCAG 2.x, 0 is black and 1 is white
Perceived brightness95.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.38:1
Contrast with white6.38:1WCAG normal text: AA
Contrast with black3.29:1WCAG normal text: Fail
Greyscale equivalent#575757
Inverted#DDA24B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2B66B7no red cones; affects about 1% of men; ΔE 5.7 from the original
Deuteranopia#0059B2no green cones; the most common form, about 1% of men; ΔE 2.7 from the original
Tritanopia#007280no blue cones; rare, and affects men and women equally; ΔE 50.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.38:1WCAG large text: AAA
Contrast with black, large text3.29:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 18.4Royal blue · ΔE 20.2Cornflower blue · ΔE 22.1Dodgerblue · ΔE 22.7Slate blue · ΔE 24Medium purple · ΔE 27.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 18.38, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B47922
Analogous#22A6B4, #3022B4
Triadic#B4225D, #5DB422
Split complementary#B43022, #A6B422
Tetradic#B422A6, #B47922, #22B430

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B2CBF0
Lighter +30%#87AEE8
Lighter +20%#5C91E0
Lighter +10%#3174D8
Darker −10%#1A4789
Darker −20%#12315E
Darker −30%#0A1B33
Darker −40%#020408
More saturated +25%#0758CF
Less saturated −25%#3D6299

Channel breakdown

R34
G93
B180
Red34 (13.3%)
Green93 (36.5%)
Blue180 (70.6%)
Hue215.75°
Saturation (HSL)68.22%
Lightness41.96%
Dominant channelBlue
Hex per channelR 22 · G 5D · B B4

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Every value on this page was computed from “225db4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.