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Colour

#243AA9

  • #243AA9
  • Blue
  • Dark
  • Nearest: Slate blue

#243AA9 is a blue with RGB values 36, 58, 169 and HSL 230°, 65%, 40%. It is a dark colour, so white text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#243AA9#243AA9
HEX#243AA9
RGBrgb(36, 58, 169)
RGB (0–1)0.1412, 0.2275, 0.6627
RGB percentages14.1%, 22.7%, 66.3%
HSLhsl(230.1, 64.9%, 40.2%)
HSV / HSBhsv(230.1, 78.7%, 66.3%)
CMYK78.7%, 65.7%, 0%, 33.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,374,313
CSS custom property--colour: #243AA9;

Brightness & contrast

Relative luminance0.06266WCAG 2.x, 0 is black and 1 is white
Perceived brightness75 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.32:1
Contrast with white9.32:1WCAG normal text: AAA
Contrast with black2.25:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#DBC556

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004DADno red cones; affects about 1% of men; ΔE 15 from the original
Deuteranopia#0041A7no green cones; the most common form, about 1% of men; ΔE 8 from the original
Tritanopia#00586Cno blue cones; rare, and affects men and women equally; ΔE 64.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.32:1WCAG large text: AAA
Contrast with black, large text2.25:1WCAG large text: Fail

Named colours

Slate blue · ΔE 16.1Rebecca purple · ΔE 18Midnight blue · ΔE 18.7Royal blue · ΔE 19.2Dark slateblue · ΔE 20.7Navy · ΔE 22.9
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 16.12, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A99324
Analogous#247CA9, #5124A9
Triadic#A9243A, #3AA924
Split complementary#A95124, #7CA924
Tetradic#A9247C, #A99324, #24A951

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ACB7ED
Lighter +30%#8292E4
Lighter +20%#586DDB
Lighter +10%#2E49D2
Darker −10%#1B2C7F
Darker −20%#121D55
Darker −30%#090F2B
Darker −40%#000001
More saturated +25%#0A29C3
Less saturated −25%#3E4B8F

Channel breakdown

R36
G58
B169
Red36 (14.1%)
Green58 (22.7%)
Blue169 (66.3%)
Hue230.08°
Saturation (HSL)64.88%
Lightness40.2%
Dominant channelBlue
Hex per channelR 24 · G 3A · B A9

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Every value on this page was computed from “243aa9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.