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Recognised as Colour

#2B3F6C

  • #2B3F6C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2B3F6C is a blue with RGB values 43, 63, 108 and HSL 222°, 43%, 30%. It is a dark colour, so white text on it reaches 10.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2B3F6C#2B3F6C
HEX#2B3F6C
RGBrgb(43, 63, 108)
RGB (0–1)0.1686, 0.2471, 0.4235
RGB percentages16.9%, 24.7%, 42.4%
HSLhsl(221.5, 43%, 29.6%)
HSV / HSBhsv(221.5, 60.2%, 42.4%)
CMYK60.2%, 41.7%, 0%, 57.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,834,284
CSS custom property--colour: #2B3F6C;

Brightness & contrast

Relative luminance0.05151WCAG 2.x, 0 is black and 1 is white
Perceived brightness64.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.34:1
Contrast with white10.34:1WCAG normal text: AAA
Contrast with black2.03:1WCAG normal text: Fail
Greyscale equivalent#3E3E3E
Inverted#D4C093

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2C436Eno red cones; affects about 1% of men; ΔE 2.5 from the original
Deuteranopia#243D6Bno green cones; the most common form, about 1% of men; ΔE 1.6 from the original
Tritanopia#004950no blue cones; rare, and affects men and women equally; ΔE 30.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.34:1WCAG large text: AAA
Contrast with black, large text2.03:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 23.5Steel blue · ΔE 27.9Dark slate grey · ΔE 31.5Slate grey · ΔE 32.7Dim grey · ΔE 34.2Midnight blue · ΔE 34.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 23.51, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6C582B
Analogous#2B5F6C, #382B6C
Triadic#6C2B3F, #3F6C2B
Split complementary#6C382B, #5F6C2B
Tetradic#6C2B5F, #6C582B, #2B6C38

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#90A5D3
Lighter +30%#6C87C4
Lighter +20%#486AB5
Lighter +10%#3A5490
Darker −10%#1C2A48
Darker −20%#0E1423
Darker −30%#000000
Darker −40%#000000
More saturated +25%#18387F
Less saturated −25%#3E4659

Channel breakdown

R43
G63
B108
Red43 (16.9%)
Green63 (24.7%)
Blue108 (42.4%)
Hue221.54°
Saturation (HSL)43.05%
Lightness29.61%
Dominant channelBlue
Hex per channelR 2B · G 3F · B 6C

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Every value on this page was computed from “2b3f6c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.