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Colour

#00515A

  • #00515A
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#00515A is a cyan with RGB values 0, 81, 90 and HSL 186°, 100%, 18%. It is a dark colour, so white text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#00515A#00515A
HEX#00515A
RGBrgb(0, 81, 90)
RGB (0–1)0, 0.3176, 0.3529
RGB percentages0%, 31.8%, 35.3%
HSLhsl(186, 100%, 17.6%)
HSV / HSBhsv(186, 100%, 35.3%)
CMYK100%, 10%, 0%, 64.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer20,826
CSS custom property--colour: #00515A;

Brightness & contrast

Relative luminance0.06623WCAG 2.x, 0 is black and 1 is white
Perceived brightness69.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.03:1
Contrast with white9.03:1WCAG normal text: AAA
Contrast with black2.32:1WCAG normal text: Fail
Greyscale equivalent#404040
Inverted#FFAEA5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#484D5Bno red cones; affects about 1% of men; ΔE 19.3 from the original
Deuteranopia#3E455Ano green cones; the most common form, about 1% of men; ΔE 20.5 from the original
Tritanopia#005554no blue cones; rare, and affects men and women equally; ΔE 7.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.03:1WCAG large text: AAA
Contrast with black, large text2.32:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 9.7Teal · ΔE 20.8Dim grey · ΔE 24.9Dark cyan · ΔE 25Slate grey · ΔE 26.8Light slate grey · ΔE 29.3
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 9.68, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5A0900
Analogous#005A36, #00245A
Triadic#5A0051, #515A00
Split complementary#5A0024, #5A3600
Tetradic#36005A, #5A0900, #245A00

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#27E9FF
Lighter +30%#00DBF3
Lighter +20%#00ADC0
Lighter +10%#007F8D
Darker −10%#002327
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00515A
Less saturated −25%#0B484F

Channel breakdown

R0
G81
B90
Red0 (0%)
Green81 (31.8%)
Blue90 (35.3%)
Hue186°
Saturation (HSL)100%
Lightness17.65%
Dominant channelBlue
Hex per channelR 00 · G 51 · B 5A

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Every value on this page was computed from “00515a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.