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Recognised as Colour

#2B5CB3

  • #2B5CB3
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2B5CB3 is a blue with RGB values 43, 92, 179 and HSL 218°, 61%, 44%. It is a dark colour, so white text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2B5CB3#2B5CB3
HEX#2B5CB3
RGBrgb(43, 92, 179)
RGB (0–1)0.1686, 0.3608, 0.702
RGB percentages16.9%, 36.1%, 70.2%
HSLhsl(218.4, 61.3%, 43.5%)
HSV / HSBhsv(218.4, 76%, 70.2%)
CMYK76%, 48.6%, 0%, 29.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,841,779
CSS custom property--colour: #2B5CB3;

Brightness & contrast

Relative luminance0.11423WCAG 2.x, 0 is black and 1 is white
Perceived brightness95.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.39:1
Contrast with white6.39:1WCAG normal text: AA
Contrast with black3.28:1WCAG normal text: Fail
Greyscale equivalent#585858
Inverted#D4A34C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2B66B6no red cones; affects about 1% of men; ΔE 6.9 from the original
Deuteranopia#0059B1no green cones; the most common form, about 1% of men; ΔE 3.3 from the original
Tritanopia#00717Fno blue cones; rare, and affects men and women equally; ΔE 50.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.39:1WCAG large text: AAA
Contrast with black, large text3.28:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 17.2Royal blue · ΔE 19.8Cornflower blue · ΔE 22.4Slate blue · ΔE 22.9Dodgerblue · ΔE 23.3Medium purple · ΔE 26.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.23, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B3822B
Analogous#2BA0B3, #3E2BB3
Triadic#B32B5C, #5CB32B
Split complementary#B33E2B, #A0B32B
Tetradic#B32BA0, #B3822B, #2BB33E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BBCEEF
Lighter +30%#92B0E5
Lighter +20%#6992DB
Lighter +10%#4074D1
Darker −10%#21478A
Darker −20%#173261
Darker −30%#0D1D38
Darker −40%#03070F
More saturated +25%#0F54CF
Less saturated −25%#476497

Channel breakdown

R43
G92
B179
Red43 (16.9%)
Green92 (36.1%)
Blue179 (70.2%)
Hue218.38°
Saturation (HSL)61.26%
Lightness43.53%
Dominant channelBlue
Hex per channelR 2B · G 5C · B B3

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Every value on this page was computed from “2b5cb3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.