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Colour

#2D4B81

  • #2D4B81
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2D4B81 is a blue with RGB values 45, 75, 129 and HSL 219°, 48%, 34%. It is a dark colour, so white text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2D4B81#2D4B81
HEX#2D4B81
RGBrgb(45, 75, 129)
RGB (0–1)0.1765, 0.2941, 0.5059
RGB percentages17.6%, 29.4%, 50.6%
HSLhsl(218.6, 48.3%, 34.1%)
HSV / HSBhsv(218.6, 65.1%, 50.6%)
CMYK65.1%, 41.9%, 0%, 49.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,968,449
CSS custom property--colour: #2D4B81;

Brightness & contrast

Relative luminance0.07175WCAG 2.x, 0 is black and 1 is white
Perceived brightness76.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.62:1
Contrast with white8.62:1WCAG normal text: AAA
Contrast with black2.44:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#D2B47E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#335083no red cones; affects about 1% of men; ΔE 3 from the original
Deuteranopia#274880no green cones; the most common form, about 1% of men; ΔE 2 from the original
Tritanopia#00575Fno blue cones; rare, and affects men and women equally; ΔE 34.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.62:1WCAG large text: AAA
Contrast with black, large text2.44:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 20.6Steel blue · ΔE 23.3Slate grey · ΔE 32.5Midnight blue · ΔE 33.4Cornflower blue · ΔE 33.6Light slate grey · ΔE 34.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 20.58, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#81632D
Analogous#2D7581, #392D81
Triadic#812D4B, #4B812D
Split complementary#81392D, #75812D
Tetradic#812D75, #81632D, #2D8139

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9DB4DD
Lighter +30%#7797D0
Lighter +20%#527AC2
Lighter +10%#3A61A7
Darker −10%#20355B
Darker −20%#131F35
Darker −30%#050910
Darker −40%#000000
More saturated +25%#174597
Less saturated −25%#43516B

Channel breakdown

R45
G75
B129
Red45 (17.6%)
Green75 (29.4%)
Blue129 (50.6%)
Hue218.57°
Saturation (HSL)48.28%
Lightness34.12%
Dominant channelBlue
Hex per channelR 2D · G 4B · B 81

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Every value on this page was computed from “2d4b81” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.