Recognised as Colour

#2A55B4

#2A55B4
Blue
Dark
Nearest: Royal blue

#2A55B4 is a blue with RGB values 42, 85, 180 and HSL 221°, 62%, 44%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#2A55B4#2A55B4

HEX#2A55B4

RGBrgb(42, 85, 180)

RGB (0–1)0.1647, 0.3333, 0.7059

RGB percentages16.5%, 33.3%, 70.6%

HSLhsl(221.3, 62.2%, 43.5%)

HSV / HSBhsv(221.3, 76.7%, 70.6%)

CMYK76.7%, 52.8%, 0%, 29.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,774,452

CSS custom property--colour: #2A55B4;

Brightness & contrast

Relative luminance0.10285WCAG 2.x, 0 is black and 1 is white

Perceived brightness92 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.87:1

Contrast with white6.87:1WCAG normal text: AA

Contrast with black3.06:1WCAG normal text: Fail

Greyscale equivalent#535353

Inverted#D5AA4B

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1161B7no red cones; affects about 1% of men; ΔE 9.8 from the original

Deuteranopia#0054B2no green cones; the most common form, about 1% of men; ΔE 3.4 from the original

Tritanopia#006C7Cno blue cones; rare, and affects men and women equally; ΔE 55.2 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text6.87:1WCAG large text: AAA

Contrast with black, large text3.06:1WCAG large text: AA

Named colours

Royal blue · ΔE 15.7 Dark slateblue · ΔE 16.1 Slate blue · ΔE 18.1 Medium purple · ΔE 24.4 Dodgerblue · ΔE 24.7 Rebecca purple · ΔE 25.1

Nearest named CSS colourRoyal blue (#4169E1)ΔE 15.67, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#B4892A

Analogous#2A9AB4, #442AB4

Triadic#B42A55, #55B42A

Split complementary#B4442A, #9AB42A

Tetradic#B42A9A, #B4892A, #2AB444

Tints, shades & saturation

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

Lighter +40%#BBCBEF

Lighter +30%#92ACE5

Lighter +20%#688CDC

Lighter +10%#3F6DD2

Darker −10%#20418B

Darker −20%#172E61

Darker −30%#0D1A38

Darker −40%#03070F

More saturated +25%#0E4BD0

Less saturated −25%#465F98

Channel breakdown

R42

G85

B180

Red42 (16.5%)

Green85 (33.3%)

Blue180 (70.6%)

Hue221.3°

Saturation (HSL)62.16%

Lightness43.53%

Dominant channelBlue

Hex per channelR 2A · G 55 · B B4

Keep nerding

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

#2A55B4

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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