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Recognised as Colour

#1D8989

  • #1D8989
  • Cyan
  • Dark
  • Nearest: Dark cyan

#1D8989 is a cyan with RGB values 29, 137, 137 and HSL 180°, 65%, 33%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Dark cyan.

Colour values

#1D8989#1D8989
HEX#1D8989
RGBrgb(29, 137, 137)
RGB (0–1)0.1137, 0.5373, 0.5373
RGB percentages11.4%, 53.7%, 53.7%
HSLhsl(180, 65.1%, 32.5%)
HSV / HSBhsv(180, 78.8%, 53.7%)
CMYK78.8%, 0%, 0%, 46.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,935,753
CSS custom property--colour: #1D8989;

Brightness & contrast

Relative luminance0.19959WCAG 2.x, 0 is black and 1 is white
Perceived brightness115.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.99:1
Contrast with white4.21:1WCAG normal text: Fail
Contrast with black4.99:1WCAG normal text: AA
Greyscale equivalent#727272
Inverted#E27676

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7F8289no red cones; affects about 1% of men; ΔE 29.1 from the original
Deuteranopia#70778Ano green cones; the most common form, about 1% of men; ΔE 30.2 from the original
Tritanopia#008E89no blue cones; rare, and affects men and women equally; ΔE 4.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.21:1WCAG large text: AA
Contrast with black, large text4.99:1WCAG large text: AAA

Named colours

Dark cyan · ΔE 2.4Teal · ΔE 3.6Cadetblue · ΔE 12.8Light seagreen · ΔE 16.9Slate grey · ΔE 26.3Light slate grey · ΔE 26.6
Nearest named CSS colourDark cyan (#008B8B)ΔE 2.38, a close match
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#891D1D
Analogous#1D8953, #1D5389
Triadic#891D89, #89891D
Split complementary#891D53, #89531D
Tetradic#531D89, #891D1D, #53891D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8BE7E7
Lighter +30%#61DEDE
Lighter +20%#37D5D5
Lighter +10%#26B3B3
Darker −10%#145F5F
Darker −20%#0B3535
Darker −30%#020B0B
Darker −40%#000000
More saturated +25%#089E9E
Less saturated −25%#327474

Channel breakdown

R29
G137
B137
Red29 (11.4%)
Green137 (53.7%)
Blue137 (53.7%)
Hue180°
Saturation (HSL)65.06%
Lightness32.55%
Dominant channelGreen and Blue
Hex per channelR 1D · G 89 · B 89

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Every value on this page was computed from “1d8989” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.