Nerdulator> put something in

Recognised as Colour

#183A36

  • #183A36
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#183A36 is a cyan with RGB values 24, 58, 54 and HSL 173°, 41%, 16%. It is a dark colour, so white text on it reaches 12.4:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#183A36#183A36
HEX#183A36
RGBrgb(24, 58, 54)
RGB (0–1)0.0941, 0.2275, 0.2118
RGB percentages9.4%, 22.7%, 21.2%
HSLhsl(172.9, 41.5%, 16.1%)
HSV / HSBhsv(172.9, 58.6%, 22.7%)
CMYK58.6%, 0%, 6.9%, 77.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,587,766
CSS custom property--colour: #183A36;

Brightness & contrast

Relative luminance0.03487WCAG 2.x, 0 is black and 1 is white
Perceived brightness49.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.37:1
Contrast with white12.37:1WCAG normal text: AAA
Contrast with black1.7:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#E7C5C9

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#373736no red cones; affects about 1% of men; ΔE 13.5 from the original
Deuteranopia#323336no green cones; the most common form, about 1% of men; ΔE 13.9 from the original
Tritanopia#053B39no blue cones; rare, and affects men and women equally; ΔE 4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.37:1WCAG large text: AAA
Contrast with black, large text1.7:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 9.8Black · ΔE 25.8Dim grey · ΔE 26.3Teal · ΔE 31.3Slate grey · ΔE 34.3Gray · ΔE 34.5
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 9.84, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3A181C
Analogous#183A25, #182D3A
Triadic#36183A, #3A3618
Split complementary#3A182D, #3A2518
Tetradic#25183A, #3A181C, #2D3A18

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#61BDB3
Lighter +30%#45A69B
Lighter +20%#368279
Lighter +10%#275E58
Darker −10%#091614
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0E443E
Less saturated −25%#22302E

Channel breakdown

R24
G58
B54
Red24 (9.4%)
Green58 (22.7%)
Blue54 (21.2%)
Hue172.94°
Saturation (HSL)41.46%
Lightness16.08%
Dominant channelGreen
Hex per channelR 18 · G 3A · B 36

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “183a36” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.