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Recognised as Colour

#2D4166

  • #2D4166
  • Blue
  • Dark
  • Nearest: Dark slate grey

#2D4166 is a blue with RGB values 45, 65, 102 and HSL 219°, 39%, 29%. It is a dark colour, so white text on it reaches 10.2:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2D4166#2D4166
HEX#2D4166
RGBrgb(45, 65, 102)
RGB (0–1)0.1765, 0.2549, 0.4
RGB percentages17.6%, 25.5%, 40%
HSLhsl(218.9, 38.8%, 28.8%)
HSV / HSBhsv(218.9, 55.9%, 40%)
CMYK55.9%, 36.3%, 0%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,965,862
CSS custom property--colour: #2D4166;

Brightness & contrast

Relative luminance0.05298WCAG 2.x, 0 is black and 1 is white
Perceived brightness65.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.2:1
Contrast with white10.2:1WCAG normal text: AAA
Contrast with black2.06:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#D2BE99

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#324468no red cones; affects about 1% of men; ΔE 1.6 from the original
Deuteranopia#2C3F65no green cones; the most common form, about 1% of men; ΔE 1.2 from the original
Tritanopia#10494Eno blue cones; rare, and affects men and women equally; ΔE 25.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.2:1WCAG large text: AAA
Contrast with black, large text2.06:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 26.1Steel blue · ΔE 27.4Dark slateblue · ΔE 28.6Slate grey · ΔE 29.3Dim grey · ΔE 29.7Light slate grey · ΔE 31.8
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 26.07, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#66522D
Analogous#2D5D66, #362D66
Triadic#662D41, #41662D
Split complementary#66362D, #5D662D
Tetradic#662D5D, #66522D, #2D6636

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#91A6CE
Lighter +30%#6D8ABF
Lighter +20%#4C6EAD
Lighter +10%#3D5889
Darker −10%#1D2A43
Darker −20%#0E141F
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1B3C78
Less saturated −25%#3F4654

Channel breakdown

R45
G65
B102
Red45 (17.6%)
Green65 (25.5%)
Blue102 (40%)
Hue218.95°
Saturation (HSL)38.78%
Lightness28.82%
Dominant channelBlue
Hex per channelR 2D · G 41 · B 66

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Every value on this page was computed from “2d4166” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.