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Recognised as Colour

#123A42

  • #123A42
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#123A42 is a cyan with RGB values 18, 58, 66 and HSL 190°, 57%, 16%. It is a dark colour, so white text on it reaches 12.3:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#123A42#123A42
HEX#123A42
RGBrgb(18, 58, 66)
RGB (0–1)0.0706, 0.2275, 0.2588
RGB percentages7.1%, 22.7%, 25.9%
HSLhsl(190, 57.1%, 16.5%)
HSV / HSBhsv(190, 72.7%, 25.9%)
CMYK72.7%, 12.1%, 0%, 74.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,194,562
CSS custom property--colour: #123A42;

Brightness & contrast

Relative luminance0.03548WCAG 2.x, 0 is black and 1 is white
Perceived brightness50.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.28:1
Contrast with white12.28:1WCAG normal text: AAA
Contrast with black1.71:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#EDC5BD

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#343842no red cones; affects about 1% of men; ΔE 12.1 from the original
Deuteranopia#2D3342no green cones; the most common form, about 1% of men; ΔE 12.6 from the original
Tritanopia#003D3Cno blue cones; rare, and affects men and women equally; ΔE 8.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.28:1WCAG large text: AAA
Contrast with black, large text1.71:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 10.6Black · ΔE 26.3Dim grey · ΔE 26.4Teal · ΔE 31.7Slate grey · ΔE 32Gray · ΔE 34.5
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 10.62, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#421A12
Analogous#124232, #122242
Triadic#42123A, #3A4212
Split complementary#421222, #423212
Tetradic#321242, #421A12, #224212

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#51BACF
Lighter +30%#33A4BA
Lighter +20%#288092
Lighter +10%#1D5D6A
Darker −10%#07171A
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#08414D
Less saturated −25%#1D3338

Channel breakdown

R18
G58
B66
Red18 (7.1%)
Green58 (22.7%)
Blue66 (25.9%)
Hue190°
Saturation (HSL)57.14%
Lightness16.47%
Dominant channelBlue
Hex per channelR 12 · G 3A · B 42

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Every value on this page was computed from “123a42” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.