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Recognised as Colour

#405B75

  • #405B75
  • Blue
  • Dark
  • Nearest: Slate grey

#405B75 is a blue with RGB values 64, 91, 117 and HSL 209°, 29%, 35%. It is a dark colour, so white text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Slate grey.

Colour values

#405B75#405B75
HEX#405B75
RGBrgb(64, 91, 117)
RGB (0–1)0.251, 0.3569, 0.4588
RGB percentages25.1%, 35.7%, 45.9%
HSLhsl(209.4, 29.3%, 35.5%)
HSV / HSBhsv(209.4, 45.3%, 45.9%)
CMYK45.3%, 22.2%, 0%, 54.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,217,717
CSS custom property--colour: #405B75;

Brightness & contrast

Relative luminance0.09857WCAG 2.x, 0 is black and 1 is white
Perceived brightness87.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.07:1
Contrast with white7.07:1WCAG normal text: AAA
Contrast with black2.97:1WCAG normal text: Fail
Greyscale equivalent#575757
Inverted#BFA48A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#515B76no red cones; affects about 1% of men; ΔE 5.8 from the original
Deuteranopia#4A5674no green cones; the most common form, about 1% of men; ΔE 5.9 from the original
Tritanopia#2B6164no blue cones; rare, and affects men and women equally; ΔE 17.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.07:1WCAG large text: AAA
Contrast with black, large text2.97:1WCAG large text: Fail

Named colours

Slate grey · ΔE 16.9Dark slate grey · ΔE 18Dim grey · ΔE 19.3Light slate grey · ΔE 19.5Steel blue · ΔE 20.7Gray · ΔE 24.1
Nearest named CSS colourSlate grey (#708090)ΔE 16.92, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#755A40
Analogous#407575, #404075
Triadic#75405B, #5B7540
Split complementary#754040, #757540
Tetradic#754075, #755A40, #407540

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AEC1D3
Lighter +30%#8DA7C1
Lighter +20%#6C8EAF
Lighter +10%#527596
Darker −10%#2E4154
Darker −20%#1C2833
Darker −30%#0A0E12
Darker −40%#000000
More saturated +25%#295B8C
Less saturated −25%#575B5E

Channel breakdown

R64
G91
B117
Red64 (25.1%)
Green91 (35.7%)
Blue117 (45.9%)
Hue209.43°
Saturation (HSL)29.28%
Lightness35.49%
Dominant channelBlue
Hex per channelR 40 · G 5B · B 75

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Every value on this page was computed from “405b75” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.