Recognised as Colour

#405BBB

#405BBB
Blue
Dark
Nearest: Royal blue

#405BBB is a blue with RGB values 64, 91, 187 and HSL 227°, 49%, 49%. It is a dark colour, so white text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#405BBB#405BBB

HEX#405BBB

RGBrgb(64, 91, 187)

RGB (0–1)0.251, 0.3569, 0.7333

RGB percentages25.1%, 35.7%, 73.3%

HSLhsl(226.8, 49%, 49.2%)

HSV / HSBhsv(226.8, 65.8%, 73.3%)

CMYK65.8%, 51.3%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,217,787

CSS custom property--colour: #405BBB;

Brightness & contrast

Relative luminance0.1216WCAG 2.x, 0 is black and 1 is white

Perceived brightness100.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.12:1

Contrast with white6.12:1WCAG normal text: AA

Contrast with black3.43:1WCAG normal text: Fail

Greyscale equivalent#5C5C5C

Inverted#BFA444

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2268BEno red cones; affects about 1% of men; ΔE 11.8 from the original

Deuteranopia#005DB9no green cones; the most common form, about 1% of men; ΔE 8.1 from the original

Tritanopia#007282no blue cones; rare, and affects men and women equally; ΔE 56.5 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text6.12:1WCAG large text: AAA

Contrast with black, large text3.43:1WCAG large text: AA

Named colours

Royal blue · ΔE 14 Slate blue · ΔE 15.6 Dark slateblue · ΔE 16.4 Medium purple · ΔE 20.8 Dodgerblue · ΔE 23.4 Rebecca purple · ΔE 24

Nearest named CSS colourRoyal blue (#4169E1)ΔE 14.03, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#BBA040

Analogous#4099BB, #6240BB

Triadic#BB405B, #5BBB40

Split complementary#BB6240, #99BB40

Tetradic#BB4099, #BBA040, #40BB62

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#D6DCF1

Lighter +30%#B0BBE4

Lighter +20%#8A9BD7

Lighter +10%#647ACA

Darker −10%#334995

Darker −20%#26366F

Darker −30%#192449

Darker −40%#0C1123

More saturated +25%#2149DA

Less saturated −25%#5F6D9C

Channel breakdown

R64

G91

B187

Red64 (25.1%)

Green91 (35.7%)

Blue187 (73.3%)

Hue226.83°

Saturation (HSL)49%

Lightness49.22%

Dominant channelBlue

Hex per channelR 40 · G 5B · B BB

Keep nerding

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

#405BBB

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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