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Recognised as Colour

#133B41

  • #133B41
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#133B41 is a cyan with RGB values 19, 59, 65 and HSL 188°, 55%, 16%. It is a dark colour, so white text on it reaches 12.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#133B41#133B41
HEX#133B41
RGBrgb(19, 59, 65)
RGB (0–1)0.0745, 0.2314, 0.2549
RGB percentages7.5%, 23.1%, 25.5%
HSLhsl(187.8, 54.8%, 16.5%)
HSV / HSBhsv(187.8, 70.8%, 25.5%)
CMYK70.8%, 9.2%, 0%, 74.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,260,353
CSS custom property--colour: #133B41;

Brightness & contrast

Relative luminance0.03648WCAG 2.x, 0 is black and 1 is white
Perceived brightness51.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.14:1
Contrast with white12.14:1WCAG normal text: AAA
Contrast with black1.73:1WCAG normal text: Fail
Greyscale equivalent#333333
Inverted#ECC4BE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#353941no red cones; affects about 1% of men; ΔE 12.3 from the original
Deuteranopia#2F3441no green cones; the most common form, about 1% of men; ΔE 13.1 from the original
Tritanopia#003E3Dno blue cones; rare, and affects men and women equally; ΔE 7.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.14:1WCAG large text: AAA
Contrast with black, large text1.73:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 9.7Dim grey · ΔE 26.1Black · ΔE 26.5Teal · ΔE 31Slate grey · ΔE 31.9Gray · ΔE 34.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 9.71, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#411913
Analogous#134130, #132441
Triadic#41133B, #3B4113
Split complementary#411324, #413013
Tetradic#301341, #411913, #244113

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#53BDCD
Lighter +30%#36A6B7
Lighter +20%#2A8390
Lighter +10%#1F5F68
Darker −10%#07171A
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#08434B
Less saturated −25%#1D3336

Channel breakdown

R19
G59
B65
Red19 (7.5%)
Green59 (23.1%)
Blue65 (25.5%)
Hue187.83°
Saturation (HSL)54.76%
Lightness16.47%
Dominant channelBlue
Hex per channelR 13 · G 3B · B 41

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Every value on this page was computed from “133b41” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.