Colour

#42A889

#42A889
Cyan
Dark
Nearest: Medium aquamarine

#42A889 is a cyan with RGB values 66, 168, 137 and HSL 162°, 44%, 46%. It is a dark colour, so black text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#42A889#42A889

HEX#42A889

RGBrgb(66, 168, 137)

RGB (0–1)0.2588, 0.6588, 0.5373

RGB percentages25.9%, 65.9%, 53.7%

HSLhsl(161.8, 43.6%, 45.9%)

HSV / HSBhsv(161.8, 60.7%, 65.9%)

CMYK60.7%, 0%, 18.5%, 34.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,368,521

CSS custom property--colour: #42A889;

Brightness & contrast

Relative luminance0.3097WCAG 2.x, 0 is black and 1 is white

Perceived brightness141.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 7.19:1

Contrast with white2.92:1WCAG normal text: Fail

Contrast with black7.19:1WCAG normal text: AAA

Greyscale equivalent#909090

Inverted#BD5776

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#A49D87no red cones; affects about 1% of men; ΔE 36.3 from the original

Deuteranopia#95938Bno green cones; the most common form, about 1% of men; ΔE 36.5 from the original

Tritanopia#00A99Fno 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 text2.92:1WCAG large text: Fail

Contrast with black, large text7.19:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 13.3 Light seagreen · ΔE 14 Sea green · ΔE 17 Dark seagreen · ΔE 19.6 Dark cyan · ΔE 20.3 Medium seagreen · ΔE 20.5

Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 13.3, a distinctly different colour

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#A84261

Analogous#42A856, #4294A8

Triadic#8942A8, #A88942

Split complementary#A84294, #A85642

Tetradic#5642A8, #A84261, #94A842

Tints, shades & saturation

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

Lighter +40%#CBEBE1

Lighter +30%#A7DCCC

Lighter +20%#82CEB7

Lighter +10%#5DC0A2

Darker −10%#34836B

Darker −20%#255F4D

Darker −30%#173A2F

Darker −40%#081612

More saturated +25%#25C594

Less saturated −25%#5F8B7E

Channel breakdown

R66

G168

B137

Red66 (25.9%)

Green168 (65.9%)

Blue137 (53.7%)

Hue161.76°

Saturation (HSL)43.59%

Lightness45.88%

Dominant channelGreen

Hex per channelR 42 · G A8 · B 89

Keep nerding

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#42A889

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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