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Recognised as Colour

#374B5E

  • #374B5E
  • Blue
  • Dark
  • Nearest: Dark slate grey

#374B5E is a blue with RGB values 55, 75, 94 and HSL 209°, 26%, 29%. It is a dark colour, so white text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#374B5E#374B5E
HEX#374B5E
RGBrgb(55, 75, 94)
RGB (0–1)0.2157, 0.2941, 0.3686
RGB percentages21.6%, 29.4%, 36.9%
HSLhsl(209.2, 26.2%, 29.2%)
HSV / HSBhsv(209.2, 41.5%, 36.9%)
CMYK41.5%, 20.2%, 0%, 63.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,623,774
CSS custom property--colour: #374B5E;

Brightness & contrast

Relative luminance0.06653WCAG 2.x, 0 is black and 1 is white
Perceived brightness72.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.01:1
Contrast with white9.01:1WCAG normal text: AAA
Contrast with black2.33:1WCAG normal text: Fail
Greyscale equivalent#484848
Inverted#C8B4A1

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#434B5Fno red cones; affects about 1% of men; ΔE 4.4 from the original
Deuteranopia#3F475Eno green cones; the most common form, about 1% of men; ΔE 5.3 from the original
Tritanopia#294F51no blue cones; rare, and affects men and women equally; ΔE 13.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.01:1WCAG large text: AAA
Contrast with black, large text2.33:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 13.7Dim grey · ΔE 19.3Slate grey · ΔE 22Light slate grey · ΔE 25Gray · ΔE 26.5Steel blue · ΔE 28.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 13.69, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5E4A37
Analogous#375E5E, #37375E
Triadic#5E374B, #4B5E37
Split complementary#5E3737, #5E5E37
Tetradic#5E375E, #5E4A37, #385E37

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9CB1C5
Lighter +30%#7C98B2
Lighter +20%#5D7E9E
Lighter +10%#4A657E
Darker −10%#24313E
Darker −20%#11181E
Darker −30%#000000
Darker −40%#000000
More saturated +25%#244B71
Less saturated −25%#4A4B4B

Channel breakdown

R55
G75
B94
Red55 (21.6%)
Green75 (29.4%)
Blue94 (36.9%)
Hue209.23°
Saturation (HSL)26.17%
Lightness29.22%
Dominant channelBlue
Hex per channelR 37 · G 4B · B 5E

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Every value on this page was computed from “374b5e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.