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Colour

#4491DD

  • #4491DD
  • Blue
  • Dark
  • Nearest: Cornflower blue

#4491DD is a blue with RGB values 68, 145, 221 and HSL 210°, 69%, 57%. It is a dark colour, so black text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#4491DD#4491DD
HEX#4491DD
RGBrgb(68, 145, 221)
RGB (0–1)0.2667, 0.5686, 0.8667
RGB percentages26.7%, 56.9%, 86.7%
HSLhsl(209.8, 69.2%, 56.7%)
HSV / HSBhsv(209.8, 69.2%, 86.7%)
CMYK69.2%, 34.4%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,493,789
CSS custom property--colour: #4491DD;

Brightness & contrast

Relative luminance0.267WCAG 2.x, 0 is black and 1 is white
Perceived brightness138.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.34:1
Contrast with white3.31:1WCAG normal text: Fail
Contrast with black6.34:1WCAG normal text: AA
Greyscale equivalent#868686
Inverted#BB6E22

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6F95E0no red cones; affects about 1% of men; ΔE 8.3 from the original
Deuteranopia#5987DCno green cones; the most common form, about 1% of men; ΔE 9.7 from the original
Tritanopia#00A3ADno blue cones; rare, and affects men and women equally; ΔE 44.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.31:1WCAG large text: AA
Contrast with black, large text6.34:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 9.9Steel blue · ΔE 15.6Dodgerblue · ΔE 20Deep skyblue · ΔE 23.3Light skyblue · ΔE 29.5Royal blue · ΔE 34
Nearest named CSS colourCornflower blue (#6495ED)ΔE 9.87, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DD9044
Analogous#44DDDC, #4445DD
Triadic#DD4491, #91DD44
Split complementary#DD4445, #DDDD44
Tetradic#DC44DD, #DD9044, #44DD44

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F1F7FC
Lighter +30%#C5DDF5
Lighter +20%#9AC4ED
Lighter +10%#6FAAE5
Darker −10%#2578C9
Darker −20%#1D5E9E
Darker −30%#154473
Darker −40%#0D2B48
More saturated +25%#2891F9
Less saturated −25%#6091C1

Channel breakdown

R68
G145
B221
Red68 (26.7%)
Green145 (56.9%)
Blue221 (86.7%)
Hue209.8°
Saturation (HSL)69.23%
Lightness56.67%
Dominant channelBlue
Hex per channelR 44 · G 91 · B DD

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Every value on this page was computed from “4491dd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.