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Recognised as Colour

#423FBE

  • #423FBE
  • Blue
  • Dark
  • Nearest: Slate blue

#423FBE is a blue with RGB values 66, 63, 190 and HSL 241°, 50%, 50%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#423FBE#423FBE
HEX#423FBE
RGBrgb(66, 63, 190)
RGB (0–1)0.2588, 0.2471, 0.7451
RGB percentages25.9%, 24.7%, 74.5%
HSLhsl(241.4, 50.2%, 49.6%)
HSV / HSBhsv(241.4, 66.8%, 74.5%)
CMYK65.3%, 66.8%, 0%, 25.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,341,694
CSS custom property--colour: #423FBE;

Brightness & contrast

Relative luminance0.08431WCAG 2.x, 0 is black and 1 is white
Perceived brightness88 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.82:1
Contrast with white7.82:1WCAG normal text: AAA
Contrast with black2.69:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#BDC041

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0057C2no red cones; affects about 1% of men; ΔE 20.3 from the original
Deuteranopia#004CBCno green cones; the most common form, about 1% of men; ΔE 14.6 from the original
Tritanopia#006079no blue cones; rare, and affects men and women equally; ΔE 71.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.82:1WCAG large text: AAA
Contrast with black, large text2.69:1WCAG large text: Fail

Named colours

Slate blue · ΔE 14.2Medium slateblue · ΔE 17.3Royal blue · ΔE 19.2Rebecca purple · ΔE 19.3Indigo · ΔE 22.4Dark blue · ΔE 22.6
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 14.16, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BBBE3F
Analogous#3F7BBE, #823FBE
Triadic#BE423F, #3FBE42
Split complementary#BE823F, #7BBE3F
Tetradic#BE3F7C, #BBBE3F, #3FBE82

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D8D7F2
Lighter +30%#B2B1E5
Lighter +20%#8C8BD8
Lighter +10%#6764CC
Darker −10%#353298
Darker −20%#272671
Darker −30%#1A194B
Darker −40%#0D0C25
More saturated +25%#241FDE
Less saturated −25%#605F9E

Channel breakdown

R66
G63
B190
Red66 (25.9%)
Green63 (24.7%)
Blue190 (74.5%)
Hue241.42°
Saturation (HSL)50.2%
Lightness49.61%
Dominant channelBlue
Hex per channelR 42 · G 3F · B BE

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Every value on this page was computed from “423fbe” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.