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Recognised as Colour

#242B39

  • #242B39
  • Blue
  • Dark
  • Nearest: Dark slate grey

#242B39 is a blue with RGB values 36, 43, 57 and HSL 220°, 23%, 18%. It is a dark colour, so white text on it reaches 14.2:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#242B39#242B39
HEX#242B39
RGBrgb(36, 43, 57)
RGB (0–1)0.1412, 0.1686, 0.2235
RGB percentages14.1%, 16.9%, 22.4%
HSLhsl(220, 22.6%, 18.2%)
HSV / HSBhsv(220, 36.8%, 22.4%)
CMYK36.8%, 24.6%, 0%, 77.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,370,361
CSS custom property--colour: #242B39;

Brightness & contrast

Relative luminance0.02398WCAG 2.x, 0 is black and 1 is white
Perceived brightness42.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.19:1
Contrast with white14.19:1WCAG normal text: AAA
Contrast with black1.48:1WCAG normal text: Fail
Greyscale equivalent#2B2B2B
Inverted#DBD4C6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#262C3Ano red cones; affects about 1% of men; ΔE 0.7 from the original
Deuteranopia#242A39no green cones; the most common form, about 1% of men; ΔE 0.9 from the original
Tritanopia#1E2E30no blue cones; rare, and affects men and women equally; ΔE 9.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.19:1WCAG large text: AAA
Contrast with black, large text1.48:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 19.8Black · ΔE 20.1Dim grey · ΔE 28.8Slate grey · ΔE 35.5Gray · ΔE 37.5Light slate grey · ΔE 38.6
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 19.81, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#393224
Analogous#243639, #282439
Triadic#39242B, #2B3924
Split complementary#392824, #363924
Tetradic#392435, #393224, #243927

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7C8CAD
Lighter +30%#5F7297
Lighter +20%#4B5A78
Lighter +10%#384358
Darker −10%#10131A
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#182745
Less saturated −25%#2F2F2F

Channel breakdown

R36
G43
B57
Red36 (14.1%)
Green43 (16.9%)
Blue57 (22.4%)
Hue220°
Saturation (HSL)22.58%
Lightness18.24%
Dominant channelBlue
Hex per channelR 24 · G 2B · B 39

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Every value on this page was computed from “242b39” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.