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Recognised as Colour

#184F4D

  • #184F4D
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#184F4D is a cyan with RGB values 24, 79, 77 and HSL 178°, 53%, 20%. It is a dark colour, so white text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#184F4D#184F4D
HEX#184F4D
RGBrgb(24, 79, 77)
RGB (0–1)0.0941, 0.3098, 0.302
RGB percentages9.4%, 31%, 30.2%
HSLhsl(177.8, 53.4%, 20.2%)
HSV / HSBhsv(177.8, 69.6%, 31%)
CMYK69.6%, 0%, 2.5%, 69%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,593,165
CSS custom property--colour: #184F4D;

Brightness & contrast

Relative luminance0.06322WCAG 2.x, 0 is black and 1 is white
Perceived brightness67.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.27:1
Contrast with white9.27:1WCAG normal text: AAA
Contrast with black2.26:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#E7B0B2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4A4B4Dno red cones; affects about 1% of men; ΔE 18.5 from the original
Deuteranopia#42454Dno green cones; the most common form, about 1% of men; ΔE 18.9 from the original
Tritanopia#00514Eno blue cones; rare, and affects men and women equally; ΔE 3.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.27:1WCAG large text: AAA
Contrast with black, large text2.26:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 6.5Teal · ΔE 21.4Dim grey · ΔE 23.4Dark cyan · ΔE 25.8Slate grey · ΔE 28.5Gray · ΔE 29.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 6.52, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4F181A
Analogous#184F31, #18364F
Triadic#4D184F, #4F4D18
Split complementary#4F1836, #4F3218
Tetradic#31184F, #4F181A, #364F18

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#63D0CC
Lighter +30%#3CC4BF
Lighter +20%#309D99
Lighter +10%#247673
Darker −10%#0C2827
Darker −20%#000101
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0B5C59
Less saturated −25%#254241

Channel breakdown

R24
G79
B77
Red24 (9.4%)
Green79 (31%)
Blue77 (30.2%)
Hue177.82°
Saturation (HSL)53.4%
Lightness20.2%
Dominant channelGreen
Hex per channelR 18 · G 4F · B 4D

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Every value on this page was computed from “184f4d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.