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Recognised as Colour

#243FB0

  • #243FB0
  • Blue
  • Dark
  • Nearest: Slate blue

#243FB0 is a blue with RGB values 36, 63, 176 and HSL 228°, 66%, 42%. It is a dark colour, so white text on it reaches 8.7:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#243FB0#243FB0
HEX#243FB0
RGBrgb(36, 63, 176)
RGB (0–1)0.1412, 0.2471, 0.6902
RGB percentages14.1%, 24.7%, 69%
HSLhsl(228.4, 66%, 41.6%)
HSV / HSBhsv(228.4, 79.5%, 69%)
CMYK79.5%, 64.2%, 0%, 31%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,375,600
CSS custom property--colour: #243FB0;

Brightness & contrast

Relative luminance0.07065WCAG 2.x, 0 is black and 1 is white
Perceived brightness79 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.7:1
Contrast with white8.7:1WCAG normal text: AAA
Contrast with black2.41:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#DBC04F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0052B4no red cones; affects about 1% of men; ΔE 15 from the original
Deuteranopia#0045AEno green cones; the most common form, about 1% of men; ΔE 7.2 from the original
Tritanopia#005D71no blue cones; rare, and affects men and women equally; ΔE 65.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.7:1WCAG large text: AAA
Contrast with black, large text2.41:1WCAG large text: Fail

Named colours

Slate blue · ΔE 14.9Royal blue · ΔE 17.1Rebecca purple · ΔE 19.1Midnight blue · ΔE 20.8Dark slateblue · ΔE 21.6Medium slateblue · ΔE 22.3
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 14.85, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B09524
Analogous#2485B0, #4F24B0
Triadic#B0243F, #3FB024
Split complementary#B04F24, #85B024
Tetradic#B02485, #B09524, #24B04F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B1BDEF
Lighter +30%#8799E6
Lighter +20%#5C75DE
Lighter +10%#3251D5
Darker −10%#1B3086
Darker −20%#13215B
Darker −30%#0A1231
Darker −40%#010207
More saturated +25%#092FCB
Less saturated −25%#3E4F96

Channel breakdown

R36
G63
B176
Red36 (14.1%)
Green63 (24.7%)
Blue176 (69%)
Hue228.43°
Saturation (HSL)66.04%
Lightness41.57%
Dominant channelBlue
Hex per channelR 24 · G 3F · B B0

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Every value on this page was computed from “243fb0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.