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Recognised as Colour

#232B5A

  • #232B5A
  • Blue
  • Dark
  • Nearest: Dark slateblue

#232B5A is a blue with RGB values 35, 43, 90 and HSL 231°, 44%, 25%. It is a dark colour, so white text on it reaches 13.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#232B5A#232B5A
HEX#232B5A
RGBrgb(35, 43, 90)
RGB (0–1)0.1373, 0.1686, 0.3529
RGB percentages13.7%, 16.9%, 35.3%
HSLhsl(231.3, 44%, 24.5%)
HSV / HSBhsv(231.3, 61.1%, 35.3%)
CMYK61.1%, 52.2%, 0%, 64.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,304,858
CSS custom property--colour: #232B5A;

Brightness & contrast

Relative luminance0.02823WCAG 2.x, 0 is black and 1 is white
Perceived brightness48.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.42:1
Contrast with white13.42:1WCAG normal text: AAA
Contrast with black1.56:1WCAG normal text: Fail
Greyscale equivalent#2D2D2D
Inverted#DCD4A5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#14315Cno red cones; affects about 1% of men; ΔE 6.6 from the original
Deuteranopia#0C2D59no green cones; the most common form, about 1% of men; ΔE 6 from the original
Tritanopia#03363Eno blue cones; rare, and affects men and women equally; ΔE 31.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.42:1WCAG large text: AAA
Contrast with black, large text1.56:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 21.8Midnight blue · ΔE 28Steel blue · ΔE 37.2Dark slate grey · ΔE 37.3Black · ΔE 37.4Rebecca purple · ΔE 37.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 21.79, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5A5223
Analogous#23475A, #37235A
Triadic#5A232B, #2B5A23
Split complementary#5A3623, #475A23
Tetradic#5A2347, #5A5223, #235A36

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7D88CC
Lighter +30%#5867BE
Lighter +20%#404EA3
Lighter +10%#313D7F
Darker −10%#151935
Darker −20%#060811
Darker −30%#000000
Darker −40%#000000
More saturated +25%#13206A
Less saturated −25%#33364A

Channel breakdown

R35
G43
B90
Red35 (13.7%)
Green43 (16.9%)
Blue90 (35.3%)
Hue231.27°
Saturation (HSL)44%
Lightness24.51%
Dominant channelBlue
Hex per channelR 23 · G 2B · B 5A

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Every value on this page was computed from “232b5a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.