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Colour

#2A3579

  • #2A3579
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2A3579 is a blue with RGB values 42, 53, 121 and HSL 232°, 48%, 32%. It is a dark colour, so white text on it reaches 11.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2A3579#2A3579
HEX#2A3579
RGBrgb(42, 53, 121)
RGB (0–1)0.1647, 0.2078, 0.4745
RGB percentages16.5%, 20.8%, 47.5%
HSLhsl(231.6, 48.5%, 32%)
HSV / HSBhsv(231.6, 65.3%, 47.5%)
CMYK65.3%, 56.2%, 0%, 52.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,766,201
CSS custom property--colour: #2A3579;

Brightness & contrast

Relative luminance0.04419WCAG 2.x, 0 is black and 1 is white
Perceived brightness62 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.15:1
Contrast with white11.15:1WCAG normal text: AAA
Contrast with black1.88:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#D5CA86

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#063F7Bno red cones; affects about 1% of men; ΔE 10.9 from the original
Deuteranopia#003878no green cones; the most common form, about 1% of men; ΔE 7.5 from the original
Tritanopia#004551no blue cones; rare, and affects men and women equally; ΔE 43 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.15:1WCAG large text: AAA
Contrast with black, large text1.88:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 9.5Midnight blue · ΔE 18.4Rebecca purple · ΔE 26.3Slate blue · ΔE 31.9Royal blue · ΔE 34.6Indigo · ΔE 35.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 9.54, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#796E2A
Analogous#2A5D79, #462A79
Triadic#792A35, #35792A
Split complementary#79472A, #5C792A
Tetradic#792A5D, #796E2A, #2A7947

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#959EDA
Lighter +30%#6F7CCD
Lighter +20%#495AC0
Lighter +10%#37469F
Darker −10%#1D2453
Darker −20%#10142D
Darker −30%#030307
Darker −40%#000000
More saturated +25%#16268D
Less saturated −25%#3E4465

Channel breakdown

R42
G53
B121
Red42 (16.5%)
Green53 (20.8%)
Blue121 (47.5%)
Hue231.65°
Saturation (HSL)48.47%
Lightness31.96%
Dominant channelBlue
Hex per channelR 2A · G 35 · B 79

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Every value on this page was computed from “2a3579” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.