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Recognised as Colour

#37435F

  • #37435F
  • Blue
  • Dark
  • Nearest: Dark slate grey

#37435F is a blue with RGB values 55, 67, 95 and HSL 222°, 27%, 29%. It is a dark colour, so white text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#37435F#37435F
HEX#37435F
RGBrgb(55, 67, 95)
RGB (0–1)0.2157, 0.2627, 0.3725
RGB percentages21.6%, 26.3%, 37.3%
HSLhsl(222, 26.7%, 29.4%)
HSV / HSBhsv(222, 42.1%, 37.3%)
CMYK42.1%, 29.5%, 0%, 62.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,621,727
CSS custom property--colour: #37435F;

Brightness & contrast

Relative luminance0.05653WCAG 2.x, 0 is black and 1 is white
Perceived brightness67.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.86:1
Contrast with white9.86:1WCAG normal text: AAA
Contrast with black2.13:1WCAG normal text: Fail
Greyscale equivalent#424242
Inverted#C8BCA0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#394560no red cones; affects about 1% of men; ΔE 1.1 from the original
Deuteranopia#36425Eno green cones; the most common form, about 1% of men; ΔE 0.4 from the original
Tritanopia#2A494Dno blue cones; rare, and affects men and women equally; ΔE 18.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.86:1WCAG large text: AAA
Contrast with black, large text2.13:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 20.9Dim grey · ΔE 24.3Slate grey · ΔE 26Steel blue · ΔE 28.7Light slate grey · ΔE 28.8Gray · ΔE 31.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 20.92, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5F5337
Analogous#37575F, #3F375F
Triadic#5F3743, #435F37
Split complementary#5F3F37, #575F37
Tetradic#5F3757, #5F5337, #375F3F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9CA9C6
Lighter +30%#7C8CB3
Lighter +20%#5C71A0
Lighter +10%#4A5A7F
Darker −10%#242C3F
Darker −20%#12151E
Darker −30%#000000
Darker −40%#000000
More saturated +25%#243B72
Less saturated −25%#4A4B4C

Channel breakdown

R55
G67
B95
Red55 (21.6%)
Green67 (26.3%)
Blue95 (37.3%)
Hue222°
Saturation (HSL)26.67%
Lightness29.41%
Dominant channelBlue
Hex per channelR 37 · G 43 · B 5F

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Every value on this page was computed from “37435f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.