Recognised as Colour

#1B666F

#1B666F
Cyan
Dark
Nearest: Dark slate grey

#1B666F is a cyan with RGB values 27, 102, 111 and HSL 186°, 61%, 27%. It is a dark colour, so white text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Dark slate grey.

Colour values

#1B666F#1B666F

HEX#1B666F

RGBrgb(27, 102, 111)

RGB (0–1)0.1059, 0.4, 0.4353

RGB percentages10.6%, 40%, 43.5%

HSLhsl(186.4, 60.9%, 27.1%)

HSV / HSBhsv(186.4, 75.7%, 43.5%)

CMYK75.7%, 8.1%, 0%, 56.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,795,695

CSS custom property--colour: #1B666F;

Brightness & contrast

Relative luminance0.10883WCAG 2.x, 0 is black and 1 is white

Perceived brightness87.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.61:1

Contrast with white6.61:1WCAG normal text: AA

Contrast with black3.18:1WCAG normal text: Fail

Greyscale equivalent#575757

Inverted#E49990

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5D6270no red cones; affects about 1% of men; ΔE 20.6 from the original

Deuteranopia#51596Fno green cones; the most common form, about 1% of men; ΔE 21.4 from the original

Tritanopia#006B69no blue cones; rare, and affects men and women equally; ΔE 8.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text6.61:1WCAG large text: AAA

Contrast with black, large text3.18:1WCAG large text: AA

Named colours

Dark slate grey · ΔE 13.4 Teal · ΔE 13.7 Dark cyan · ΔE 17.5 Slate grey · ΔE 21.5 Cadetblue · ΔE 22.2 Dim grey · ΔE 22.8

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 13.42, a distinctly different colour

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#6F241B

Analogous#1B6F4E, #1B3C6F

Triadic#6F1B66, #666F1B

Split complementary#6F1B3C, #6F4E1B

Tetradic#4E1B6F, #6F241B, #3C6F1B

Tints, shades & saturation

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

Lighter +40%#78D3DE

Lighter +30%#4FC6D4

Lighter +20%#2FB1C1

Lighter +10%#258C98

Darker −10%#114046

Darker −20%#071B1D

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0A7480

Less saturated −25%#2C585E

Channel breakdown

R27

G102

B111

Red27 (10.6%)

Green102 (40%)

Blue111 (43.5%)

Hue186.43°

Saturation (HSL)60.87%

Lightness27.06%

Dominant channelBlue

Hex per channelR 1B · G 66 · B 6F

Keep nerding

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

#1B666F

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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