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Colour

#333F5C

  • #333F5C
  • Blue
  • Dark
  • Nearest: Dark slate grey

#333F5C is a blue with RGB values 51, 63, 92 and HSL 222°, 29%, 28%. It is a dark colour, so white text on it reaches 10.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#333F5C#333F5C
HEX#333F5C
RGBrgb(51, 63, 92)
RGB (0–1)0.2, 0.2471, 0.3608
RGB percentages20%, 24.7%, 36.1%
HSLhsl(222.4, 28.7%, 28%)
HSV / HSBhsv(222.4, 44.6%, 36.1%)
CMYK44.6%, 31.5%, 0%, 63.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,358,556
CSS custom property--colour: #333F5C;

Brightness & contrast

Relative luminance0.05032WCAG 2.x, 0 is black and 1 is white
Perceived brightness63.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.47:1
Contrast with white10.47:1WCAG normal text: AAA
Contrast with black2.01:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#CCC0A3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#35415Dno red cones; affects about 1% of men; ΔE 1.1 from the original
Deuteranopia#313E5Bno green cones; the most common form, about 1% of men; ΔE 0.6 from the original
Tritanopia#254549no blue cones; rare, and affects men and women equally; ΔE 19.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.47:1WCAG large text: AAA
Contrast with black, large text2.01:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 22Dim grey · ΔE 26Slate grey · ΔE 27.9Steel blue · ΔE 29.9Light slate grey · ΔE 30.7Dark slateblue · ΔE 32.5
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 22.02, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5C5033
Analogous#33535C, #3C335C
Triadic#5C333F, #3F5C33
Split complementary#5C3C33, #545C33
Tetradic#5C3353, #5C5033, #335C3C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#96A4C5
Lighter +30%#7587B3
Lighter +20%#576C9E
Lighter +10%#45557D
Darker −10%#21293B
Darker −20%#0F121A
Darker −30%#000000
Darker −40%#000000
More saturated +25%#21386E
Less saturated −25%#45464A

Channel breakdown

R51
G63
B92
Red51 (20%)
Green63 (24.7%)
Blue92 (36.1%)
Hue222.44°
Saturation (HSL)28.67%
Lightness28.04%
Dominant channelBlue
Hex per channelR 33 · G 3F · B 5C

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Every value on this page was computed from “333f5c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.