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Recognised as Colour

#173E2B

  • #173E2B
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#173E2B is a cyan with RGB values 23, 62, 43 and HSL 151°, 46%, 17%. It is a dark colour, so white text on it reaches 11.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#173E2B#173E2B
HEX#173E2B
RGBrgb(23, 62, 43)
RGB (0–1)0.0902, 0.2431, 0.1686
RGB percentages9%, 24.3%, 16.9%
HSLhsl(150.8, 45.9%, 16.7%)
HSV / HSBhsv(150.8, 62.9%, 24.3%)
CMYK62.9%, 0%, 30.6%, 75.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,523,243
CSS custom property--colour: #173E2B;

Brightness & contrast

Relative luminance0.03802WCAG 2.x, 0 is black and 1 is white
Perceived brightness51.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.93:1
Contrast with white11.93:1WCAG normal text: AAA
Contrast with black1.76:1WCAG normal text: Fail
Greyscale equivalent#343434
Inverted#E8C1D4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3D392Ano red cones; affects about 1% of men; ΔE 18.2 from the original
Deuteranopia#38352Cno green cones; the most common form, about 1% of men; ΔE 18.7 from the original
Tritanopia#093E39no blue cones; rare, and affects men and women equally; ΔE 9.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.93:1WCAG large text: AAA
Contrast with black, large text1.76:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 15.9Dim grey · ΔE 29.7Dark olivegreen · ΔE 30Black · ΔE 30.9Teal · ΔE 31.5Dark cyan · ΔE 35.5
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 15.89, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3E172A
Analogous#173E17, #173E3E
Triadic#2B173E, #3E2B17
Split complementary#3E173E, #3E1717
Tetradic#17173E, #3E172A, #3D3E17

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5EC392
Lighter +30%#40AE78
Lighter +20%#33885F
Lighter +10%#256345
Darker −10%#091911
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0C492B
Less saturated −25%#22332B

Channel breakdown

R23
G62
B43
Red23 (9%)
Green62 (24.3%)
Blue43 (16.9%)
Hue150.77°
Saturation (HSL)45.88%
Lightness16.67%
Dominant channelGreen
Hex per channelR 17 · G 3E · B 2B

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Every value on this page was computed from “173e2b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.