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Recognised as Colour

#137D99

  • #137D99
  • Cyan
  • Dark
  • Nearest: Steel blue

#137D99 is a cyan with RGB values 19, 125, 153 and HSL 193°, 78%, 34%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#137D99#137D99
HEX#137D99
RGBrgb(19, 125, 153)
RGB (0–1)0.0745, 0.4902, 0.6
RGB percentages7.5%, 49%, 60%
HSLhsl(192.5, 77.9%, 33.7%)
HSV / HSBhsv(192.5, 87.6%, 60%)
CMYK87.6%, 18.3%, 0%, 40%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,277,337
CSS custom property--colour: #137D99;

Brightness & contrast

Relative luminance0.17106WCAG 2.x, 0 is black and 1 is white
Perceived brightness109.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.75:1
Contrast with white4.75:1WCAG normal text: AA
Contrast with black4.42:1WCAG normal text: Fail
Greyscale equivalent#686868
Inverted#EC8266

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6D7A9Ano red cones; affects about 1% of men; ΔE 21.1 from the original
Deuteranopia#5C6E99no green cones; the most common form, about 1% of men; ΔE 22.5 from the original
Tritanopia#008686no blue cones; rare, and affects men and women equally; ΔE 18.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.75:1WCAG large text: AAA
Contrast with black, large text4.42:1WCAG large text: AA

Named colours

Steel blue · ΔE 16.9Teal · ΔE 18.3Dark cyan · ΔE 19.4Cadetblue · ΔE 20.2Slate grey · ΔE 20.3Light slate grey · ΔE 20.8
Nearest named CSS colourSteel blue (#4682B4)ΔE 16.91, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#992F13
Analogous#139972, #133A99
Triadic#99137D, #7D9913
Split complementary#99133A, #997213
Tetradic#721399, #992F13, #3A9913

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#88DAF0
Lighter +30%#5ACCEB
Lighter +20%#2DBFE5
Lighter +10%#19A2C6
Darker −10%#0D586C
Darker −20%#08333E
Darker −30%#020E11
Darker −40%#000000
More saturated +25%#0088AC
Less saturated −25%#287084

Channel breakdown

R19
G125
B153
Red19 (7.5%)
Green125 (49%)
Blue153 (60%)
Hue192.54°
Saturation (HSL)77.91%
Lightness33.73%
Dominant channelBlue
Hex per channelR 13 · G 7D · B 99

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Every value on this page was computed from “137d99” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.