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Recognised as Colour

#123D41

  • #123D41
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#123D41 is a cyan with RGB values 18, 61, 65 and HSL 185°, 57%, 16%. 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

#123D41#123D41
HEX#123D41
RGBrgb(18, 61, 65)
RGB (0–1)0.0706, 0.2392, 0.2549
RGB percentages7.1%, 23.9%, 25.5%
HSLhsl(185.1, 56.6%, 16.3%)
HSV / HSBhsv(185.1, 72.3%, 25.5%)
CMYK72.3%, 6.2%, 0%, 74.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,195,329
CSS custom property--colour: #123D41;

Brightness & contrast

Relative luminance0.03848WCAG 2.x, 0 is black and 1 is white
Perceived brightness52.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.87:1
Contrast with white11.87:1WCAG normal text: AAA
Contrast with black1.77:1WCAG normal text: Fail
Greyscale equivalent#343434
Inverted#EDC2BE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#383A41no red cones; affects about 1% of men; ΔE 14.2 from the original
Deuteranopia#313541no green cones; the most common form, about 1% of men; ΔE 14.6 from the original
Tritanopia#00403Eno blue cones; rare, and affects men and women equally; ΔE 6.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.87:1WCAG large text: AAA
Contrast with black, large text1.77:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 8.8Dim grey · ΔE 25.9Black · ΔE 27.5Teal · ΔE 29.7Slate grey · ΔE 31.8Gray · ΔE 33.8
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 8.77, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#411612
Analogous#12412D, #122641
Triadic#41123D, #3D4112
Split complementary#411226, #412D12
Tetradic#2D1241, #411612, #264112

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#50C4CF
Lighter +30%#33ADB9
Lighter +20%#288891
Lighter +10%#1D6269
Darker −10%#071819
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#08464B
Less saturated −25%#1C3437

Channel breakdown

R18
G61
B65
Red18 (7.1%)
Green61 (23.9%)
Blue65 (25.5%)
Hue185.11°
Saturation (HSL)56.63%
Lightness16.27%
Dominant channelBlue
Hex per channelR 12 · G 3D · B 41

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Every value on this page was computed from “123d41” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.