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Colour

#4377AA

  • #4377AA
  • Blue
  • Dark
  • Nearest: Steel blue

#4377AA is a blue with RGB values 67, 119, 170 and HSL 210°, 43%, 46%. 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

#4377AA#4377AA
HEX#4377AA
RGBrgb(67, 119, 170)
RGB (0–1)0.2627, 0.4667, 0.6667
RGB percentages26.3%, 46.7%, 66.7%
HSLhsl(209.7, 43.5%, 46.5%)
HSV / HSBhsv(209.7, 60.6%, 66.7%)
CMYK60.6%, 30%, 0%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,421,546
CSS custom property--colour: #4377AA;

Brightness & contrast

Relative luminance0.17289WCAG 2.x, 0 is black and 1 is white
Perceived brightness113.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.71:1
Contrast with white4.71:1WCAG normal text: AA
Contrast with black4.46:1WCAG normal text: Fail
Greyscale equivalent#707070
Inverted#BC8855

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6179ACno red cones; affects about 1% of men; ΔE 7.4 from the original
Deuteranopia#546FA9no green cones; the most common form, about 1% of men; ΔE 8.6 from the original
Tritanopia#008389no blue cones; rare, and affects men and women equally; ΔE 33.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.71:1WCAG large text: AAA
Contrast with black, large text4.46:1WCAG large text: AA

Named colours

Steel blue · ΔE 4.6Slate grey · ΔE 22.3Light slate grey · ΔE 22.5Cornflower blue · ΔE 24.1Deep skyblue · ΔE 30.6Light skyblue · ΔE 32.7
Nearest named CSS colourSteel blue (#4682B4)ΔE 4.63, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AA7643
Analogous#43AAA9, #4344AA
Triadic#AA4377, #77AA43
Split complementary#AA4344, #AAA943
Tetradic#A943AA, #AA7643, #44AA43

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CEDDEB
Lighter +30%#A9C3DD
Lighter +20%#84AACF
Lighter +10%#6090C0
Darker −10%#355D85
Darker −20%#264461
Darker −30%#182A3C
Darker −40%#091118
More saturated +25%#2577C8
Less saturated −25%#61778C

Channel breakdown

R67
G119
B170
Red67 (26.3%)
Green119 (46.7%)
Blue170 (66.7%)
Hue209.71°
Saturation (HSL)43.46%
Lightness46.47%
Dominant channelBlue
Hex per channelR 43 · G 77 · B AA

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Every value on this page was computed from “4377aa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.