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Recognised as Colour

#2D4571

  • #2D4571
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2D4571 is a blue with RGB values 45, 69, 113 and HSL 219°, 43%, 31%. It is a dark colour, so white text on it reaches 9.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2D4571#2D4571
HEX#2D4571
RGBrgb(45, 69, 113)
RGB (0–1)0.1765, 0.2706, 0.4431
RGB percentages17.6%, 27.1%, 44.3%
HSLhsl(218.8, 43%, 31%)
HSV / HSBhsv(218.8, 60.2%, 44.3%)
CMYK60.2%, 38.9%, 0%, 55.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,966,897
CSS custom property--colour: #2D4571;

Brightness & contrast

Relative luminance0.06006WCAG 2.x, 0 is black and 1 is white
Perceived brightness69.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.54:1
Contrast with white9.54:1WCAG normal text: AAA
Contrast with black2.2:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#D2BA8E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#334973no red cones; affects about 1% of men; ΔE 2.3 from the original
Deuteranopia#2A4270no green cones; the most common form, about 1% of men; ΔE 1.9 from the original
Tritanopia#004F55no blue cones; rare, and affects men and women equally; ΔE 30.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.54:1WCAG large text: AAA
Contrast with black, large text2.2:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 25Steel blue · ΔE 25.2Dark slate grey · ΔE 29.9Slate grey · ΔE 30.3Dim grey · ΔE 32.4Light slate grey · ΔE 32.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 24.96, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#71592D
Analogous#2D6771, #372D71
Triadic#712D45, #45712D
Split complementary#71372D, #67712D
Tetradic#712D67, #71592D, #2D7137

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#95ACD5
Lighter +30%#718FC6
Lighter +20%#4C72B8
Lighter +10%#3C5B95
Darker −10%#1E2F4D
Darker −20%#101828
Darker −30%#010204
Darker −40%#000000
More saturated +25%#193F85
Less saturated −25%#414B5D

Channel breakdown

R45
G69
B113
Red45 (17.6%)
Green69 (27.1%)
Blue113 (44.3%)
Hue218.82°
Saturation (HSL)43.04%
Lightness30.98%
Dominant channelBlue
Hex per channelR 2D · G 45 · B 71

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Every value on this page was computed from “2d4571” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.