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Recognised as Colour

#234D8B

  • #234D8B
  • Blue
  • Dark
  • Nearest: Dark slateblue

#234D8B is a blue with RGB values 35, 77, 139 and HSL 216°, 60%, 34%. It is a dark colour, so white text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#234D8B#234D8B
HEX#234D8B
RGBrgb(35, 77, 139)
RGB (0–1)0.1373, 0.302, 0.5451
RGB percentages13.7%, 30.2%, 54.5%
HSLhsl(215.8, 59.8%, 34.1%)
HSV / HSBhsv(215.8, 74.8%, 54.5%)
CMYK74.8%, 44.6%, 0%, 45.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,313,611
CSS custom property--colour: #234D8B;

Brightness & contrast

Relative luminance0.07529WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.38:1
Contrast with white8.38:1WCAG normal text: AAA
Contrast with black2.51:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#DCB274

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2E538Dno red cones; affects about 1% of men; ΔE 3.8 from the original
Deuteranopia#1B498Ano green cones; the most common form, about 1% of men; ΔE 2.8 from the original
Tritanopia#005C65no blue cones; rare, and affects men and women equally; ΔE 38.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.38:1WCAG large text: AAA
Contrast with black, large text2.51:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 18.4Steel blue · ΔE 23.9Cornflower blue · ΔE 30.8Midnight blue · ΔE 31.1Royal blue · ΔE 35.4Rebecca purple · ΔE 35.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 18.43, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8B6123
Analogous#23818B, #2D238B
Triadic#8B234D, #4D8B23
Split complementary#8B2D23, #818B23
Tetradic#8B2381, #8B6123, #238B2D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#96B5E4
Lighter +30%#6D99DA
Lighter +20%#447DD0
Lighter +10%#2D64B4
Darker −10%#193662
Darker −20%#0E203A
Darker −30%#040911
Darker −40%#000000
More saturated +25%#0D49A1
Less saturated −25%#395175

Channel breakdown

R35
G77
B139
Red35 (13.7%)
Green77 (30.2%)
Blue139 (54.5%)
Hue215.77°
Saturation (HSL)59.77%
Lightness34.12%
Dominant channelBlue
Hex per channelR 23 · G 4D · B 8B

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Every value on this page was computed from “234d8b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.