Recognised as Colour

#557B83

#557B83
Cyan
Dark
Nearest: Slate grey

#557B83 is a cyan with RGB values 85, 123, 131 and HSL 190°, 21%, 42%. It is a dark colour, so white text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#557B83#557B83

HEX#557B83

RGBrgb(85, 123, 131)

RGB (0–1)0.3333, 0.4824, 0.5137

RGB percentages33.3%, 48.2%, 51.4%

HSLhsl(190.4, 21.3%, 42.4%)

HSV / HSBhsv(190.4, 35.1%, 51.4%)

CMYK35.1%, 6.1%, 0%, 48.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,602,179

CSS custom property--colour: #557B83;

Brightness & contrast

Relative luminance0.17736WCAG 2.x, 0 is black and 1 is white

Perceived brightness114 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.62:1

Contrast with white4.62:1WCAG normal text: AA

Contrast with black4.55:1WCAG normal text: AA

Greyscale equivalent#737373

Inverted#AA847C

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#747884no red cones; affects about 1% of men; ΔE 12.4 from the original

Deuteranopia#6D7283no green cones; the most common form, about 1% of men; ΔE 13.2 from the original

Tritanopia#447F7Dno blue cones; rare, and affects men and women equally; ΔE 9.3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text4.62:1WCAG large text: AAA

Contrast with black, large text4.55:1WCAG large text: AAA

Named colours

Slate grey · ΔE 9.9 Light slate grey · ΔE 11.5 Cadetblue · ΔE 14.7 Gray · ΔE 14.8 Dim grey · ΔE 14.9 Teal · ΔE 17.7

Nearest named CSS colourSlate grey (#708090)ΔE 9.94, clearly different but related

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#835D55

Analogous#558374, #556483

Triadic#83557B, #7B8355

Split complementary#835564, #837455

Tetradic#745583, #835D55, #648355

Tints, shades & saturation

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

Lighter +40%#C8D8DC

Lighter +30%#A9C2C8

Lighter +20%#8BACB3

Lighter +10%#6C969F

Darker −10%#415E64

Darker −20%#2D4145

Darker −30%#192426

Darker −40%#050707

More saturated +25%#3A8D9E

Less saturated −25%#6C6C6C

Channel breakdown

R85

G123

B131

Red85 (33.3%)

Green123 (48.2%)

Blue131 (51.4%)

Hue190.43°

Saturation (HSL)21.3%

Lightness42.35%

Dominant channelBlue

Hex per channelR 55 · G 7B · B 83

Keep nerding

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

#557B83

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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