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Colour

#2B374F

  • #2B374F
  • Blue
  • Dark
  • Nearest: Dark slate grey

#2B374F is a blue with RGB values 43, 55, 79 and HSL 220°, 30%, 24%. 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

#2B374F#2B374F
HEX#2B374F
RGBrgb(43, 55, 79)
RGB (0–1)0.1686, 0.2157, 0.3098
RGB percentages16.9%, 21.6%, 31%
HSLhsl(220, 29.5%, 23.9%)
HSV / HSBhsv(220, 45.6%, 31%)
CMYK45.6%, 30.4%, 0%, 69%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,832,207
CSS custom property--colour: #2B374F;

Brightness & contrast

Relative luminance0.0381WCAG 2.x, 0 is black and 1 is white
Perceived brightness55.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.92:1
Contrast with white11.92:1WCAG normal text: AAA
Contrast with black1.76:1WCAG normal text: Fail
Greyscale equivalent#363636
Inverted#D4C8B0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2F3950no red cones; affects about 1% of men; ΔE 1.4 from the original
Deuteranopia#2B354Eno green cones; the most common form, about 1% of men; ΔE 1.3 from the original
Tritanopia#1F3C3Fno blue cones; rare, and affects men and women equally; ΔE 16.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.92:1WCAG large text: AAA
Contrast with black, large text1.76:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 20.5Dim grey · ΔE 26.9Black · ΔE 28.3Slate grey · ΔE 30.7Light slate grey · ΔE 33.6Steel blue · ΔE 34.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 20.52, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4F432B
Analogous#2B494F, #312B4F
Triadic#4F2B37, #374F2B
Split complementary#4F312B, #494F2B
Tetradic#4F2B49, #4F432B, #2B4F31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#889ABE
Lighter +30%#677EAC
Lighter +20%#4F6591
Lighter +10%#3D4E70
Darker −10%#19202E
Darker −20%#07090D
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1C325E
Less saturated −25%#3A3C40

Channel breakdown

R43
G55
B79
Red43 (16.9%)
Green55 (21.6%)
Blue79 (31%)
Hue220°
Saturation (HSL)29.51%
Lightness23.92%
Dominant channelBlue
Hex per channelR 2B · G 37 · B 4F

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Every value on this page was computed from “2b374f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.