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Recognised as Colour

#233FC3

  • #233FC3
  • Blue
  • Dark
  • Nearest: Slate blue

#233FC3 is a blue with RGB values 35, 63, 195 and HSL 230°, 70%, 45%. It is a dark colour, so white text on it reaches 8.2:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#233FC3#233FC3
HEX#233FC3
RGBrgb(35, 63, 195)
RGB (0–1)0.1373, 0.2471, 0.7647
RGB percentages13.7%, 24.7%, 76.5%
HSLhsl(229.5, 69.6%, 45.1%)
HSV / HSBhsv(229.5, 82.1%, 76.5%)
CMYK82.1%, 67.7%, 0%, 23.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,310,083
CSS custom property--colour: #233FC3;

Brightness & contrast

Relative luminance0.07852WCAG 2.x, 0 is black and 1 is white
Perceived brightness83.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.17:1
Contrast with white8.17:1WCAG normal text: AAA
Contrast with black2.57:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#DCC03C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0057C7no red cones; affects about 1% of men; ΔE 18.3 from the original
Deuteranopia#0048C1no green cones; the most common form, about 1% of men; ΔE 8.9 from the original
Tritanopia#00637Cno blue cones; rare, and affects men and women equally; ΔE 73.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.17:1WCAG large text: AAA
Contrast with black, large text2.57:1WCAG large text: Fail

Named colours

Slate blue · ΔE 18Medium slateblue · ΔE 19.5Royal blue · ΔE 19.9Dark blue · ΔE 22.3Navy · ΔE 23.3Rebecca purple · ΔE 24.4
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 18, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C3A723
Analogous#238FC3, #5723C3
Triadic#C3233F, #3FC323
Split complementary#C35723, #8FC323
Tetradic#C3238F, #C3A723, #23C357

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BFC8F3
Lighter +30%#93A3EC
Lighter +20%#687EE4
Lighter +10%#3D59DC
Darker −10%#1B3198
Darker −20%#13236D
Darker −30%#0C1541
Darker −40%#040716
More saturated +25%#062CE0
Less saturated −25%#4052A6

Channel breakdown

R35
G63
B195
Red35 (13.7%)
Green63 (24.7%)
Blue195 (76.5%)
Hue229.5°
Saturation (HSL)69.57%
Lightness45.1%
Dominant channelBlue
Hex per channelR 23 · G 3F · B C3

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Every value on this page was computed from “233fc3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.