Nerdulator> put something in

Recognised as Colour

#405A8D

  • #405A8D
  • Blue
  • Dark
  • Nearest: Steel blue

#405A8D is a blue with RGB values 64, 90, 141 and HSL 220°, 38%, 40%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#405A8D#405A8D
HEX#405A8D
RGBrgb(64, 90, 141)
RGB (0–1)0.251, 0.3529, 0.5529
RGB percentages25.1%, 35.3%, 55.3%
HSLhsl(219.7, 37.6%, 40.2%)
HSV / HSBhsv(219.7, 54.6%, 55.3%)
CMYK54.6%, 36.2%, 0%, 44.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,217,485
CSS custom property--colour: #405A8D;

Brightness & contrast

Relative luminance0.10325WCAG 2.x, 0 is black and 1 is white
Perceived brightness90.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.85:1
Contrast with white6.85:1WCAG normal text: AA
Contrast with black3.07:1WCAG normal text: Fail
Greyscale equivalent#585858
Inverted#BFA572

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#465E8Fno red cones; affects about 1% of men; ΔE 2.2 from the original
Deuteranopia#3D578Cno green cones; the most common form, about 1% of men; ΔE 1.8 from the original
Tritanopia#18656Dno blue cones; rare, and affects men and women equally; ΔE 32.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.85:1WCAG large text: AAA
Contrast with black, large text3.07:1WCAG large text: AA

Named colours

Steel blue · ΔE 17.3Dark slateblue · ΔE 24.1Slate grey · ΔE 26.5Light slate grey · ΔE 27.9Cornflower blue · ΔE 29.8Dim grey · ΔE 32.4
Nearest named CSS colourSteel blue (#4682B4)ΔE 17.27, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8D7340
Analogous#40818D, #4C408D
Triadic#8D405A, #5A8D40
Split complementary#8D4C40, #818D40
Tetradic#8D4081, #8D7340, #408D4C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BAC6DF
Lighter +30%#96AAD0
Lighter +20%#738DC0
Lighter +10%#5071B0
Darker −10%#30446A
Darker −20%#202D47
Darker −30%#101724
Darker −40%#000001
More saturated +25%#2652A7
Less saturated −25%#5A6273

Channel breakdown

R64
G90
B141
Red64 (25.1%)
Green90 (35.3%)
Blue141 (55.3%)
Hue219.74°
Saturation (HSL)37.56%
Lightness40.2%
Dominant channelBlue
Hex per channelR 40 · G 5A · B 8D

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “405a8d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.