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Recognised as Colour

#33637D

  • #33637D
  • Blue
  • Dark
  • Nearest: Slate grey

#33637D is a blue with RGB values 51, 99, 125 and HSL 201°, 42%, 35%. It is a dark colour, so white text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#33637D#33637D
HEX#33637D
RGBrgb(51, 99, 125)
RGB (0–1)0.2, 0.3882, 0.4902
RGB percentages20%, 38.8%, 49%
HSLhsl(201.1, 42%, 34.5%)
HSV / HSBhsv(201.1, 59.2%, 49%)
CMYK59.2%, 20.8%, 0%, 51%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,367,805
CSS custom property--colour: #33637D;

Brightness & contrast

Relative luminance0.11108WCAG 2.x, 0 is black and 1 is white
Perceived brightness91.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.52:1
Contrast with white6.52:1WCAG normal text: AA
Contrast with black3.22:1WCAG normal text: Fail
Greyscale equivalent#5B5B5B
Inverted#CC9C82

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#57627Eno red cones; affects about 1% of men; ΔE 11.3 from the original
Deuteranopia#4C5A7Dno green cones; the most common form, about 1% of men; ΔE 12.4 from the original
Tritanopia#006A6Cno blue cones; rare, and affects men and women equally; ΔE 19.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.52:1WCAG large text: AAA
Contrast with black, large text3.22:1WCAG large text: AA

Named colours

Slate grey · ΔE 16.9Dark slate grey · ΔE 18.3Steel blue · ΔE 18.4Light slate grey · ΔE 19.1Dim grey · ΔE 21.6Teal · ΔE 25
Nearest named CSS colourSlate grey (#708090)ΔE 16.9, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7D4D33
Analogous#337D72, #333E7D
Triadic#7D3363, #637D33
Split complementary#7D333E, #7D7233
Tetradic#72337D, #7D4D33, #3E7D33

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A3C6D9
Lighter +30%#7EB0CB
Lighter +20%#5A9ABC
Lighter +10%#4280A1
Darker −10%#244659
Darker −20%#152A35
Darker −30%#070D10
Darker −40%#000000
More saturated +25%#1D6A93
Less saturated −25%#495C67

Channel breakdown

R51
G99
B125
Red51 (20%)
Green99 (38.8%)
Blue125 (49%)
Hue201.08°
Saturation (HSL)42.05%
Lightness34.51%
Dominant channelBlue
Hex per channelR 33 · G 63 · B 7D

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Every value on this page was computed from “33637d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.