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Recognised as Colour

#399B99

  • #399B99
  • Cyan
  • Dark
  • Nearest: Dark cyan

#399B99 is a cyan with RGB values 57, 155, 153 and HSL 179°, 46%, 42%. It is a dark colour, so black text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Dark cyan.

Colour values

#399B99#399B99
HEX#399B99
RGBrgb(57, 155, 153)
RGB (0–1)0.2235, 0.6078, 0.6
RGB percentages22.4%, 60.8%, 60%
HSLhsl(178.8, 46.2%, 41.6%)
HSV / HSBhsv(178.8, 63.2%, 60.8%)
CMYK63.2%, 0%, 1.3%, 39.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,775,385
CSS custom property--colour: #399B99;

Brightness & contrast

Relative luminance0.26612WCAG 2.x, 0 is black and 1 is white
Perceived brightness133.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.32:1
Contrast with white3.32:1WCAG normal text: Fail
Contrast with black6.32:1WCAG normal text: AA
Greyscale equivalent#868686
Inverted#C66466

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#929499no red cones; affects about 1% of men; ΔE 29.2 from the original
Deuteranopia#82889Ano green cones; the most common form, about 1% of men; ΔE 30.3 from the original
Tritanopia#009F9Ano blue cones; rare, and affects men and women equally; ΔE 6.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.32:1WCAG large text: AA
Contrast with black, large text6.32:1WCAG large text: AAA

Named colours

Dark cyan · ΔE 7Cadetblue · ΔE 9.1Teal · ΔE 10.4Light seagreen · ΔE 11.6Medium turquoise · ΔE 20.3Dark turquoise · ΔE 21.2
Nearest named CSS colourDark cyan (#008B8B)ΔE 6.95, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9B393B
Analogous#399B68, #396C9B
Triadic#99399B, #9B9939
Split complementary#9B396C, #9B6839
Tetradic#68399B, #9B393B, #6C9B39

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BAE6E5
Lighter +30%#95D8D7
Lighter +20%#70CAC8
Lighter +10%#4ABDBA
Darker −10%#2B7674
Darker −20%#1E504F
Darker −30%#102B2B
Darker −40%#020606
More saturated +25%#1FB5B2
Less saturated −25%#548180

Channel breakdown

R57
G155
B153
Red57 (22.4%)
Green155 (60.8%)
Blue153 (60%)
Hue178.78°
Saturation (HSL)46.23%
Lightness41.57%
Dominant channelGreen
Hex per channelR 39 · G 9B · B 99

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Every value on this page was computed from “399b99” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.