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Colour

#2B4E8A

  • #2B4E8A
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2B4E8A is a blue with RGB values 43, 78, 138 and HSL 218°, 52%, 35%. It is a dark colour, so white text on it reaches 8.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2B4E8A#2B4E8A
HEX#2B4E8A
RGBrgb(43, 78, 138)
RGB (0–1)0.1686, 0.3059, 0.5412
RGB percentages16.9%, 30.6%, 54.1%
HSLhsl(217.9, 52.5%, 35.5%)
HSV / HSBhsv(217.9, 68.8%, 54.1%)
CMYK68.8%, 43.5%, 0%, 45.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,838,154
CSS custom property--colour: #2B4E8A;

Brightness & contrast

Relative luminance0.07797WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.2:1
Contrast with white8.2:1WCAG normal text: AAA
Contrast with black2.56:1WCAG normal text: Fail
Greyscale equivalent#4B4B4B
Inverted#D4B175

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#32548Cno red cones; affects about 1% of men; ΔE 3.8 from the original
Deuteranopia#234B89no green cones; the most common form, about 1% of men; ΔE 2 from the original
Tritanopia#005C65no blue cones; rare, and affects men and women equally; ΔE 37.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.2:1WCAG large text: AAA
Contrast with black, large text2.56:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 18.6Steel blue · ΔE 23.1Cornflower blue · ΔE 30.9Midnight blue · ΔE 31.9Slate grey · ΔE 34.5Light slate grey · ΔE 35.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 18.63, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8A672B
Analogous#2B7E8A, #372B8A
Triadic#8A2B4E, #4E8A2B
Split complementary#8A372B, #7D8A2B
Tetradic#8A2B7E, #8A672B, #2B8A37

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A0B8E1
Lighter +30%#799BD5
Lighter +20%#527EC9
Lighter +10%#3764B1
Darker −10%#1F3863
Darker −20%#13223C
Darker −30%#070C15
Darker −40%#000000
More saturated +25%#1448A1
Less saturated −25%#425473

Channel breakdown

R43
G78
B138
Red43 (16.9%)
Green78 (30.6%)
Blue138 (54.1%)
Hue217.89°
Saturation (HSL)52.49%
Lightness35.49%
Dominant channelBlue
Hex per channelR 2B · G 4E · B 8A

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Every value on this page was computed from “2b4e8a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.