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Recognised as Colour

#23455A

  • #23455A
  • Blue
  • Dark
  • Nearest: Dark slate grey

#23455A is a blue with RGB values 35, 69, 90 and HSL 203°, 44%, 25%. It is a dark colour, so white text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#23455A#23455A
HEX#23455A
RGBrgb(35, 69, 90)
RGB (0–1)0.1373, 0.2706, 0.3529
RGB percentages13.7%, 27.1%, 35.3%
HSLhsl(202.9, 44%, 24.5%)
HSV / HSBhsv(202.9, 61.1%, 35.3%)
CMYK61.1%, 23.3%, 0%, 64.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,311,514
CSS custom property--colour: #23455A;

Brightness & contrast

Relative luminance0.05352WCAG 2.x, 0 is black and 1 is white
Perceived brightness63.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.14:1
Contrast with white10.14:1WCAG normal text: AAA
Contrast with black2.07:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#DCBAA5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3B455Bno red cones; affects about 1% of men; ΔE 7.7 from the original
Deuteranopia#343F5Ano green cones; the most common form, about 1% of men; ΔE 8.8 from the original
Tritanopia#004A4Cno blue cones; rare, and affects men and women equally; ΔE 16.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.14:1WCAG large text: AAA
Contrast with black, large text2.07:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 14.5Dim grey · ΔE 23.9Slate grey · ΔE 25.9Light slate grey · ΔE 28.8Steel blue · ΔE 29.5Gray · ΔE 31
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 14.48, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5A3823
Analogous#235A53, #232A5A
Triadic#5A2345, #455A23
Split complementary#5A232A, #5A5323
Tetradic#53235A, #5A3823, #2A5A23

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7DAECC
Lighter +30%#5897BE
Lighter +20%#407DA3
Lighter +10%#31617F
Darker −10%#152935
Darker −20%#060D11
Darker −30%#000000
Darker −40%#000000
More saturated +25%#13496A
Less saturated −25%#33414A

Channel breakdown

R35
G69
B90
Red35 (13.7%)
Green69 (27.1%)
Blue90 (35.3%)
Hue202.91°
Saturation (HSL)44%
Lightness24.51%
Dominant channelBlue
Hex per channelR 23 · G 45 · B 5A

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Every value on this page was computed from “23455a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.