Colour

#2A4857

#2A4857
Blue
Dark
Nearest: Dark slate grey

#2A4857 is a blue with RGB values 42, 72, 87 and HSL 200°, 35%, 25%. It is a dark colour, so white text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2A4857#2A4857

HEX#2A4857

RGBrgb(42, 72, 87)

RGB (0–1)0.1647, 0.2824, 0.3412

RGB percentages16.5%, 28.2%, 34.1%

HSLhsl(200, 34.9%, 25.3%)

HSV / HSBhsv(200, 51.7%, 34.1%)

CMYK51.7%, 17.2%, 0%, 65.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,771,031

CSS custom property--colour: #2A4857;

Brightness & contrast

Relative luminance0.05815WCAG 2.x, 0 is black and 1 is white

Perceived brightness66.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.71:1

Contrast with white9.71:1WCAG normal text: AAA

Contrast with black2.16:1WCAG normal text: Fail

Greyscale equivalent#434343

Inverted#D5B7A8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#414758no red cones; affects about 1% of men; ΔE 8.6 from the original

Deuteranopia#3A4257no green cones; the most common form, about 1% of men; ΔE 9 from the original

Tritanopia#144C4Dno blue cones; rare, and affects men and women equally; ΔE 12.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text9.71:1WCAG large text: AAA

Contrast with black, large text2.16:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 10.4 Dim grey · ΔE 20.8 Slate grey · ΔE 24.3 Light slate grey · ΔE 27.3 Gray · ΔE 28.3 Teal · ΔE 29.8

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 10.38, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#57392A

Analogous#2A5750, #2A3157

Triadic#572A48, #48572A

Split complementary#572A32, #57502A

Tetradic#4F2A57, #57392A, #31572A

Tints, shades & saturation

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

Lighter +40%#88B1C5

Lighter +30%#659AB5

Lighter +20%#4B819C

Lighter +10%#3B6479

Darker −10%#192C35

Darker −20%#090F12

Darker −30%#000000

Darker −40%#000000

More saturated +25%#1A4D67

Less saturated −25%#3A4347

Channel breakdown

R42

G72

B87

Red42 (16.5%)

Green72 (28.2%)

Blue87 (34.1%)

Hue200°

Saturation (HSL)34.88%

Lightness25.29%

Dominant channelBlue

Hex per channelR 2A · G 48 · B 57

Keep nerding

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#2A4857

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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