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Colour

#00405A

  • #00405A
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#00405A is a cyan with RGB values 0, 64, 90 and HSL 197°, 100%, 18%. It is a dark colour, so white text on it reaches 11.2:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#00405A#00405A
HEX#00405A
RGBrgb(0, 64, 90)
RGB (0–1)0, 0.251, 0.3529
RGB percentages0%, 25.1%, 35.3%
HSLhsl(197.3, 100%, 17.6%)
HSV / HSBhsv(197.3, 100%, 35.3%)
CMYK100%, 28.9%, 0%, 64.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,474
CSS custom property--colour: #00405A;

Brightness & contrast

Relative luminance0.04405WCAG 2.x, 0 is black and 1 is white
Perceived brightness57.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.16:1
Contrast with white11.16:1WCAG normal text: AAA
Contrast with black1.88:1WCAG normal text: Fail
Greyscale equivalent#343434
Inverted#FFBFA5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#333F5Bno red cones; affects about 1% of men; ΔE 11.2 from the original
Deuteranopia#28385Ano green cones; the most common form, about 1% of men; ΔE 12.3 from the original
Tritanopia#004749no blue cones; rare, and affects men and women equally; ΔE 17.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.16:1WCAG large text: AAA
Contrast with black, large text1.88:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 18.5Dim grey · ΔE 29.3Steel blue · ΔE 30Slate grey · ΔE 30.1Light slate grey · ΔE 32.8Black · ΔE 33.2
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 18.49, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5A1A00
Analogous#005A47, #00135A
Triadic#5A0040, #405A00
Split complementary#5A0013, #5A4700
Tetradic#47005A, #5A1A00, #135A00

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#27C1FF
Lighter +30%#00ADF3
Lighter +20%#0089C0
Lighter +10%#00648D
Darker −10%#001C27
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00405A
Less saturated −25%#0B3B4F

Channel breakdown

R0
G64
B90
Red0 (0%)
Green64 (25.1%)
Blue90 (35.3%)
Hue197.33°
Saturation (HSL)100%
Lightness17.65%
Dominant channelBlue
Hex per channelR 00 · G 40 · B 5A

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Every value on this page was computed from “00405a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.