Colour

#577F88

#577F88
Cyan
Dark
Nearest: Slate grey

#577F88 is a cyan with RGB values 87, 127, 136 and HSL 191°, 22%, 44%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#577F88#577F88

HEX#577F88

RGBrgb(87, 127, 136)

RGB (0–1)0.3412, 0.498, 0.5333

RGB percentages34.1%, 49.8%, 53.3%

HSLhsl(191, 22%, 43.7%)

HSV / HSBhsv(191, 36%, 53.3%)

CMYK36%, 6.6%, 0%, 46.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,734,280

CSS custom property--colour: #577F88;

Brightness & contrast

Relative luminance0.18983WCAG 2.x, 0 is black and 1 is white

Perceived brightness117.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.8:1

Contrast with white4.38:1WCAG normal text: Fail

Contrast with black4.8:1WCAG normal text: AA

Greyscale equivalent#777777

Inverted#A88077

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#787C89no red cones; affects about 1% of men; ΔE 13 from the original

Deuteranopia#707688no green cones; the most common form, about 1% of men; ΔE 13.4 from the original

Tritanopia#458382no blue cones; rare, and affects men and women equally; ΔE 9.5 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text4.38:1WCAG large text: AA

Contrast with black, large text4.8:1WCAG large text: AAA

Named colours

Slate grey · ΔE 9.7 Light slate grey · ΔE 10.8 Cadetblue · ΔE 13.4 Gray · ΔE 15.1 Dim grey · ΔE 16.1 Teal · ΔE 17.5

Nearest named CSS colourSlate grey (#708090)ΔE 9.68, clearly different but related

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#886057

Analogous#578879, #576788

Triadic#88577F, #7F8857

Split complementary#885767, #887957

Tetradic#795788, #886057, #678857

Tints, shades & saturation

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

Lighter +40%#CCDBDF

Lighter +30%#ADC5CB

Lighter +20%#8EAFB7

Lighter +10%#6F99A3

Darker −10%#436269

Darker −20%#2F454A

Darker −30%#1B282B

Darker −40%#070B0C

More saturated +25%#3B91A4

Less saturated −25%#707070

Channel breakdown

R87

G127

B136

Red87 (34.1%)

Green127 (49.8%)

Blue136 (53.3%)

Hue191.02°

Saturation (HSL)21.97%

Lightness43.73%

Dominant channelBlue

Hex per channelR 57 · G 7F · B 88

Keep nerding

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

#577F88

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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