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Recognised as Colour

#183A25

  • #183A25
  • Green
  • Dark
  • Nearest: Dark slate grey

#183A25 is a green with RGB values 24, 58, 37 and HSL 143°, 41%, 16%. It is a dark colour, so white text on it reaches 12.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#183A25#183A25
HEX#183A25
RGBrgb(24, 58, 37)
RGB (0–1)0.0941, 0.2275, 0.1451
RGB percentages9.4%, 22.7%, 14.5%
HSLhsl(142.9, 41.5%, 16.1%)
HSV / HSBhsv(142.9, 58.6%, 22.7%)
CMYK58.6%, 0%, 36.2%, 77.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,587,749
CSS custom property--colour: #183A25;

Brightness & contrast

Relative luminance0.03354WCAG 2.x, 0 is black and 1 is white
Perceived brightness48 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.57:1
Contrast with white12.57:1WCAG normal text: AAA
Contrast with black1.67:1WCAG normal text: Fail
Greyscale equivalent#313131
Inverted#E7C5DA

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3A3524no red cones; affects about 1% of men; ΔE 17.4 from the original
Deuteranopia#353226no green cones; the most common form, about 1% of men; ΔE 17.2 from the original
Tritanopia#0F3934no blue cones; rare, and affects men and women equally; ΔE 10.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.57:1WCAG large text: AAA
Contrast with black, large text1.67:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 17.6Black · ΔE 29.6Dark olivegreen · ΔE 29.7Dim grey · ΔE 30.8Teal · ΔE 33.9Dark cyan · ΔE 37.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 17.63, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3A182D
Analogous#1C3A18, #183A36
Triadic#25183A, #3A2518
Split complementary#36183A, #3A181C
Tetradic#181C3A, #3A182D, #3A3618

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#61BD84
Lighter +30%#45A66A
Lighter +20%#368253
Lighter +10%#275E3C
Darker −10%#09160E
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0E4423
Less saturated −25%#223027

Channel breakdown

R24
G58
B37
Red24 (9.4%)
Green58 (22.7%)
Blue37 (14.5%)
Hue142.94°
Saturation (HSL)41.46%
Lightness16.08%
Dominant channelGreen
Hex per channelR 18 · G 3A · B 25

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Every value on this page was computed from “183a25” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.