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Recognised as Colour

#004B80

  • #004B80
  • Blue
  • Dark
  • Nearest: Steel blue

#004B80 is a blue with RGB values 0, 75, 128 and HSL 205°, 100%, 25%. It is a dark colour, so white text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#004B80#004B80
HEX#004B80
RGBrgb(0, 75, 128)
RGB (0–1)0, 0.2941, 0.502
RGB percentages0%, 29.4%, 50.2%
HSLhsl(204.8, 100%, 25.1%)
HSV / HSBhsv(204.8, 100%, 50.2%)
CMYK100%, 41.4%, 0%, 49.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer19,328
CSS custom property--colour: #004B80;

Brightness & contrast

Relative luminance0.06591WCAG 2.x, 0 is black and 1 is white
Perceived brightness71.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.06:1
Contrast with white9.06:1WCAG normal text: AAA
Contrast with black2.32:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#FFB47F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#304E82no red cones; affects about 1% of men; ΔE 6 from the original
Deuteranopia#1C447Fno green cones; the most common form, about 1% of men; ΔE 7.3 from the original
Tritanopia#00585Fno blue cones; rare, and affects men and women equally; ΔE 32.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.06:1WCAG large text: AAA
Contrast with black, large text2.32:1WCAG large text: Fail

Named colours

Steel blue · ΔE 22.6Dark slateblue · ΔE 25.4Slate grey · ΔE 33.4Dark slate grey · ΔE 34.4Cornflower blue · ΔE 34.9Light slate grey · ΔE 35.1
Nearest named CSS colourSteel blue (#4682B4)ΔE 22.57, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#803500
Analogous#008075, #000B80
Triadic#80004B, #4B8000
Split complementary#80000B, #807500
Tetradic#750080, #803500, #0B8000

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4DB5FF
Lighter +30%#1AA0FF
Lighter +20%#0087E6
Lighter +10%#0069B3
Darker −10%#002D4D
Darker −20%#000F1A
Darker −30%#000000
Darker −40%#000000
More saturated +25%#004B80
Less saturated −25%#104870

Channel breakdown

R0
G75
B128
Red0 (0%)
Green75 (29.4%)
Blue128 (50.2%)
Hue204.84°
Saturation (HSL)100%
Lightness25.1%
Dominant channelBlue
Hex per channelR 00 · G 4B · B 80

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Every value on this page was computed from “004b80” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.