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Recognised as Colour

#233F75

  • #233F75
  • Blue
  • Dark
  • Nearest: Dark slateblue

#233F75 is a blue with RGB values 35, 63, 117 and HSL 220°, 54%, 30%. It is a dark colour, so white text on it reaches 10.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#233F75#233F75
HEX#233F75
RGBrgb(35, 63, 117)
RGB (0–1)0.1373, 0.2471, 0.4588
RGB percentages13.7%, 24.7%, 45.9%
HSLhsl(219.5, 53.9%, 29.8%)
HSV / HSBhsv(219.5, 70.1%, 45.9%)
CMYK70.1%, 46.2%, 0%, 54.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,310,005
CSS custom property--colour: #233F75;

Brightness & contrast

Relative luminance0.05197WCAG 2.x, 0 is black and 1 is white
Perceived brightness65.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.3:1
Contrast with white10.3:1WCAG normal text: AAA
Contrast with black2.04:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#DCC08A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#254577no red cones; affects about 1% of men; ΔE 4.2 from the original
Deuteranopia#173D74no green cones; the most common form, about 1% of men; ΔE 2 from the original
Tritanopia#004B54no blue cones; rare, and affects men and women equally; ΔE 34.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.3:1WCAG large text: AAA
Contrast with black, large text2.04:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 19.2Steel blue · ΔE 28.4Midnight blue · ΔE 29.8Slate grey · ΔE 36.5Rebecca purple · ΔE 36.8Dark slate grey · ΔE 37
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.21, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#755923
Analogous#236875, #302375
Triadic#75233F, #3F7523
Split complementary#753023, #687523
Tetradic#752368, #755923, #237530

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#88A5DC
Lighter +30%#6187D0
Lighter +20%#3A69C4
Lighter +10%#2F549C
Darker −10%#172A4E
Darker −20%#0C1526
Darker −30%#000000
Darker −40%#000000
More saturated +25%#103988
Less saturated −25%#364562

Channel breakdown

R35
G63
B117
Red35 (13.7%)
Green63 (24.7%)
Blue117 (45.9%)
Hue219.51°
Saturation (HSL)53.95%
Lightness29.8%
Dominant channelBlue
Hex per channelR 23 · G 3F · B 75

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Every value on this page was computed from “233f75” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.