Recognised as Colour

#42537A

#42537A
Blue
Dark
Nearest: Steel blue

#42537A is a blue with RGB values 66, 83, 122 and HSL 222°, 30%, 37%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#42537A#42537A

HEX#42537A

RGBrgb(66, 83, 122)

RGB (0–1)0.2588, 0.3255, 0.4784

RGB percentages25.9%, 32.5%, 47.8%

HSLhsl(221.8, 29.8%, 36.9%)

HSV / HSBhsv(221.8, 45.9%, 47.8%)

CMYK45.9%, 32%, 0%, 52.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,346,746

CSS custom property--colour: #42537A;

Brightness & contrast

Relative luminance0.0875WCAG 2.x, 0 is black and 1 is white

Perceived brightness83.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.64:1

Contrast with white7.64:1WCAG normal text: AAA

Contrast with black2.75:1WCAG normal text: Fail

Greyscale equivalent#525252

Inverted#BDAC85

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#45567Cno red cones; affects about 1% of men; ΔE 1.4 from the original

Deuteranopia#3F5179no green cones; the most common form, about 1% of men; ΔE 1.1 from the original

Tritanopia#2E5B61no blue cones; rare, and affects men and women equally; ΔE 24.3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text7.64:1WCAG large text: AAA

Contrast with black, large text2.75:1WCAG large text: Fail

Named colours

Steel blue · ΔE 20.7 Slate grey · ΔE 23.1 Light slate grey · ΔE 25.2 Dim grey · ΔE 26.2 Dark slate grey · ΔE 26.6 Dark slateblue · ΔE 28.3

Nearest named CSS colourSteel blue (#4682B4)ΔE 20.7, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#7A6942

Analogous#426F7A, #4D427A

Triadic#7A4253, #537A42

Split complementary#7A4D42, #6F7A42

Tetradic#7A426F, #7A6942, #427A4D

Tints, shades & saturation

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

Lighter +40%#B2BDD6

Lighter +30%#91A1C4

Lighter +20%#7084B2

Lighter +10%#546A9B

Darker −10%#303C59

Darker −20%#1E2638

Darker −30%#0C0F17

Darker −40%#000000

More saturated +25%#2B4A92

Less saturated −25%#5A5C63

Channel breakdown

R66

G83

B122

Red66 (25.9%)

Green83 (32.5%)

Blue122 (47.8%)

Hue221.79°

Saturation (HSL)29.79%

Lightness36.86%

Dominant channelBlue

Hex per channelR 42 · G 53 · B 7A

Keep nerding

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

#42537A

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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