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Recognised as Colour

#033F41

  • #033F41
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#033F41 is a cyan with RGB values 3, 63, 65 and HSL 182°, 91%, 13%. It is a dark colour, so white text on it reaches 11.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#033F41#033F41
HEX#033F41
RGBrgb(3, 63, 65)
RGB (0–1)0.0118, 0.2471, 0.2549
RGB percentages1.2%, 24.7%, 25.5%
HSLhsl(181.9, 91.2%, 13.3%)
HSV / HSBhsv(181.9, 95.4%, 25.5%)
CMYK95.4%, 3.1%, 0%, 74.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer212,801
CSS custom property--colour: #033F41;

Brightness & contrast

Relative luminance0.03956WCAG 2.x, 0 is black and 1 is white
Perceived brightness53 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.72:1
Contrast with white11.72:1WCAG normal text: AAA
Contrast with black1.79:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#FCC0BE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3A3B41no red cones; affects about 1% of men; ΔE 17.8 from the original
Deuteranopia#313541no green cones; the most common form, about 1% of men; ΔE 18.1 from the original
Tritanopia#00423Fno blue cones; rare, and affects men and women equally; ΔE 4.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.72:1WCAG large text: AAA
Contrast with black, large text1.79:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 9.5Dim grey · ΔE 27.4Teal · ΔE 27.7Black · ΔE 29.4Dark cyan · ΔE 32.1Slate grey · ΔE 32.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 9.46, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#410503
Analogous#034124, #032041
Triadic#41033F, #3F4103
Split complementary#410320, #412403
Tetradic#240341, #410503, #204103

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1BEDF5
Lighter +30%#0ACDD3
Lighter +20%#079DA3
Lighter +10%#056E72
Darker −10%#011010
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#004244
Less saturated −25%#0C3739

Channel breakdown

R3
G63
B65
Red3 (1.2%)
Green63 (24.7%)
Blue65 (25.5%)
Hue181.94°
Saturation (HSL)91.18%
Lightness13.33%
Dominant channelBlue
Hex per channelR 03 · G 3F · B 41

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Every value on this page was computed from “033f41” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.