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Recognised as Colour

#121C39

  • #121C39
  • Blue
  • Dark
  • Nearest: Black

#121C39 is a blue with RGB values 18, 28, 57 and HSL 225°, 52%, 15%. It is a dark colour, so white text on it reaches 16.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#121C39#121C39
HEX#121C39
RGBrgb(18, 28, 57)
RGB (0–1)0.0706, 0.1098, 0.2235
RGB percentages7.1%, 11%, 22.4%
HSLhsl(224.6, 52%, 14.7%)
HSV / HSBhsv(224.6, 68.4%, 22.4%)
CMYK68.4%, 50.9%, 0%, 77.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,186,873
CSS custom property--colour: #121C39;

Brightness & contrast

Relative luminance0.01255WCAG 2.x, 0 is black and 1 is white
Perceived brightness30.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.79:1
Contrast with white16.79:1WCAG normal text: AAA
Contrast with black1.25:1WCAG normal text: Fail
Greyscale equivalent#1C1C1C
Inverted#EDE3C6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0F1F3Ano red cones; affects about 1% of men; ΔE 2.8 from the original
Deuteranopia#0A1C38no green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#002227no blue cones; rare, and affects men and women equally; ΔE 21.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.79:1WCAG large text: AAA
Contrast with black, large text1.25:1WCAG large text: Fail

Named colours

Black · ΔE 23.9Dark slate grey · ΔE 31.9Dark slateblue · ΔE 35.4Midnight blue · ΔE 39Dim grey · ΔE 39.6Slate grey · ΔE 43.8
Nearest named CSS colourBlack (#000000)ΔE 23.9, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#392F12
Analogous#122F39, #1C1239
Triadic#39121C, #1C3912
Split complementary#391C12, #2F3912
Tetradic#391230, #392F12, #12391C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4F6EC8
Lighter +30%#3755AD
Lighter +20%#2A4287
Lighter +10%#1E2F60
Darker −10%#060912
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#091742
Less saturated −25%#1B2130

Channel breakdown

R18
G28
B57
Red18 (7.1%)
Green28 (11%)
Blue57 (22.4%)
Hue224.62°
Saturation (HSL)52%
Lightness14.71%
Dominant channelBlue
Hex per channelR 12 · G 1C · B 39

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Every value on this page was computed from “121c39” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.