Colour

#42574D

#42574D
Cyan
Dark
Nearest: Dark slate grey

#42574D is a cyan with RGB values 66, 87, 77 and HSL 151°, 14%, 30%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#42574D#42574D

HEX#42574D

RGBrgb(66, 87, 77)

RGB (0–1)0.2588, 0.3412, 0.302

RGB percentages25.9%, 34.1%, 30.2%

HSLhsl(151.4, 13.7%, 30%)

HSV / HSBhsv(151.4, 24.1%, 34.1%)

CMYK24.1%, 0%, 11.5%, 65.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,347,725

CSS custom property--colour: #42574D;

Brightness & contrast

Relative luminance0.0851WCAG 2.x, 0 is black and 1 is white

Perceived brightness80.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.77:1

Contrast with white7.77:1WCAG normal text: AAA

Contrast with black2.7:1WCAG normal text: Fail

Greyscale equivalent#525252

Inverted#BDA8B2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#56544Dno red cones; affects about 1% of men; ΔE 9.9 from the original

Deuteranopia#52514Eno green cones; the most common form, about 1% of men; ΔE 10.3 from the original

Tritanopia#3E5754no blue cones; rare, and affects men and women equally; ΔE 4.5 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text7.77:1WCAG large text: AAA

Contrast with black, large text2.7:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 8 Dim grey · ΔE 14.4 Gray · ΔE 21.5 Slate grey · ΔE 24 Teal · ΔE 25.5 Light slate grey · ΔE 26.6

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 7.98, clearly different but related

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#57424C

Analogous#425743, #425757

Triadic#4D4257, #574D42

Split complementary#574257, #574342

Tetradic#424257, #57424C, #575742

Tints, shades & saturation

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

Lighter +40%#A8BDB3

Lighter +30%#8BA79A

Lighter +20%#6E9180

Lighter +10%#587467

Darker −10%#2C3A33

Darker −20%#161D1A

Darker −30%#000000

Darker −40%#000000

More saturated +25%#2F6A4E

Less saturated −25%#4D4D4D

Channel breakdown

R66

G87

B77

Red66 (25.9%)

Green87 (34.1%)

Blue77 (30.2%)

Hue151.43°

Saturation (HSL)13.73%

Lightness30%

Dominant channelGreen

Hex per channelR 42 · G 57 · B 4D

Keep nerding

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

#42574D

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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